Drain spade buying guide
Updated: October 2026
You are about to buy something the shelf calls a hole spade, and the results mix a slim drain shovel with a twin-handled post-hole digger. A border spade or a full digging spade will not cut the same slot, and a clamshell will not start a hole in dry clay. This drain spade buying guide sorts the two families, then the joint, the weight and the price band, so you can shortlist before you chase stars. Named picks sit on the [hole spade comparison](/hub/digging-tools/hole-spade). What follows is the trade-off, not a winner. Peter F. compared the listings and public UK sources in October 2026. There was no lab test. A qualifying purchase can earn a commission at no extra cost to you.
You are about to buy something the shelf calls a hole spade, and the results mix a slim drain shovel with a twin-handled post-hole digger.
You are about to buy something the shelf calls a hole spade, and the results mix a slim drain shovel with a twin-handled post-hole digger. A border spade or a full digging spade will not cut the same slot, and a clamshell will not start a hole in dry clay. This drain spade buying guide sorts the two families, then the joint, the weight and the price band, so you can shortlist before you chase stars. Named picks sit on the hole spade comparison. What follows is the trade-off, not a winner. Peter F. compared the listings and public UK sources in October 2026. There was no lab test. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Joint | Weight | Foot tread | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Spear & Jackson Spear & Jackson 2154HK draining shovel | Forged tubular | 2.79 kg | Not stated | 9.4 | about £16.20 | View offer |
 Roughneck Roughneck drainage and post hole shovel | Power-ring socket | 1.98 kg | Yes | 9.4 | about £21.54 | View offer | |
 JCB JCB Drain Master grafting spade | One-piece forged | 2.78 kg | Yes | 9.0 | about £36.99 | View offer |
On this page
Blade, tread and joint
Once the shape is right, the joint is the next thing that fails. A forged one-piece head, such as the Spear & Jackson 2154HK or the JCB Drain Master, puts the socket and the blade in one piece of steel. A power-ring socket, as on the Roughneck drainage shovel, clamps a separate blade to a shaft. A bolted sectional shaft, as on the Jardineer, comes apart for the car and can move at every joint even after you tighten the bolts. Reviewers of that 1.2 kg serrated shovel praise the pointed 26 cm blade on bramble and hedge roots, and some say the sections still wobble. That is the wrong joint for a day of clay fence posts.
Foot treads are the step you stand on. The Roughneck drainage shovel and the JCB Drain Master state them. The 2154HK listing does not, so you should not assume a tread because the head is forged. A tread helps in firm soil. It does not make a 2.8 kg steel shaft feel light at the end of the afternoon.
Weight and the handle
A drain shovel here sits near 2 kg to 2.8 kg. The Roughneck drainage shovel is 1.98 kg on fibreglass with a D-grip. The Spear & Jackson 2154HK is 2.79 kg on tubular steel, with a stated handle length of 711 mm. The JCB Drain Master is 2.78 kg, all steel. The JCB fencing graft is 3.1 kg. The Jardineer is the light outlier at 1.2 kg, and that lightness is the bolted shaft.
Clamshells are the heavy half. The Neilsen CT1148 is 3.32 kg with 1510 mm fibreglass handles. The OLLIDOT is 3.79 kg and comes apart. The Spear & Jackson PHD-WH is 4.13 kg on ash. The Roughneck 68-250 is 5.2 kg on 1.5 m fibreglass. You lift that mass, plus soil, on every stroke. Fibreglass on a drain shovel is there to cut weight. Ash on the PHD-WH is there because some people want wood they can look after, not because it is lighter. A stated 711 mm shaft is short for at least one 2154HK reviewer. None of these is an insulated electrical tool.
About £16 to £22
Prices are a snapshot from the amazon.co.uk listings used here, not a promise that the shelf stays still. About £16 to £22 is the two drain shovels at 4.7 stars: the 2154HK at about £16.20 from 2,403 reviews, and the Roughneck drainage shovel at about £21.54 from 1,336. One is heavier forged steel. The other is lighter fibreglass with treads. The best drain spade page names which role each plays. This guide does not crown either.
About £29 to £47
About £29 to £40 mixes different tools. The Jardineer at about £29.99 is the sectional shovel, 4.1 from 36 reviews. The OLLIDOT at the same price is a detachable clamshell, 3.8 from 29, with reports of bending or coming apart. The Neilsen at about £28.99 is a fibreglass clamshell, 4.6 from 591. The Drain Master at about £36.99 is the forged graft, 4.5 from 103. The Roughneck 68-250 at about £39.99 is the heavy clamshell, 4.7 from 354. Stars without the tool type will mislead you.
About £45 to £47 is the thin top of this set. The JCB fencing drain spade is about £44.99, 4.4 from 17 reviews, with a stated 260 mm blade. The PHD-WH is about £46.15, 4.5 from 1,049 reviews. You pay for a narrow fencing blade with little owner evidence, or for an ash clamshell that still will not cut unbroken clay. The one-or-both decision sits on the drain spade versus post-hole digger page.
What to ignore in the search results
Leave border spades, mini shovels and ordinary digging spades for bed work. Leave powered augers unless the run is already too long for hand tools. A post hole digger title can mean a clamshell or, on some guides, an auger, so read the picture: two hinged blades, or a screw. Be wary of a 17-review listing at the top of the price band when a 2,000-review drain shovel costs about a third as much, unless that narrow blade is the shape you cannot get on the cheaper tool.
Common questions
Is a drain spade the same as a grafting spade?
They are close cousins. Both are narrow blades for slots and post holes, and shops use drain, graft and Newcastle on overlapping tools. The JCB Drain Master is sold as a grafting spade with a taper and foot treads. The Spear & Jackson 2154HK is sold as a draining shovel. Read the blade size, and whether a tread is stated, rather than trusting the word alone.
How narrow should the blade be?
Narrow enough that you are not opening a bed. An old catalogue shows draining blades roughly 90–150 mm across, as an example only. Here, stated sizes include 260 mm on the JCB fencing graft and 400 x 180/110 mm on the Drain Master title. A full-width digging spade shifts spoil you then put back. If the blade can no longer clean a deepening hole, that is when the clamshell takes over.
Do I need foot treads?
You need them when you expect to stand on the blade in firm or stony ground. The Roughneck drainage shovel and the JCB Drain Master state treads. The Spear & Jackson 2154HK listing does not, so do not invent one. A tread will not fix a bolted shaft or a blade that is the wrong width. If you only lift loosened soil with a clamshell, a tread on that tool is beside the point.
Fibreglass, steel, or ash?
Fibreglass, as on the Roughneck drainage shovel and the Neilsen, keeps the listed weight down. Steel, as on the 2154HK and the Drain Master, is stiffer and heavier, and the 2.79 kg drainer draws comments about fatigue. Ash on the PHD-WH is weatherproofed hardwood that reviewers say lasts if you look after it, at 4.13 kg. None of the three is insulated for electrical work. Pick the material for mass and feel, then still treat every shaft as a garden tool.
Why do some post-hole diggers weigh twice as much?
You are lifting two blades, two handles and a plug of soil. The Neilsen is listed at 3.32 kg and the Roughneck 68-250 at 5.2 kg, against drain shovels near 2 kg. Extra mass can help the thrust once the ground is loose, which is why some PHD-WH reviewers like the weight, and it is also why a long run becomes a shoulder problem. A heavier clamshell is not automatically better in clay. If the jaws bend or twist, the kilograms were in the wrong place.
What should I ignore in the search results?
Leave border spades, mini shovels and ordinary digging spades for bed work, and leave a powered auger unless the run is already too long for hand tools. Read the picture on a post hole digger title: two hinged blades, or a screw. Be wary of a 17-review listing at the top of the price band when a drain shovel with about 2,000 reviews costs about a third as much, unless that narrow blade is a shape the cheaper tool does not offer.
Related pages
Sources
Public UK sources from the research digest. Prices, stars and review counts are the amazon.co.uk listing lines used in this comparison. We did not run a lab test.
- HSE — excavation and underground services (retrieved October 2026)
- HSE HSG47 — avoiding danger from underground services (retrieved October 2026)
- HSE CIS65 — excavating near underground services (retrieved October 2026)
- Energy Networks Association — Think before you dig (retrieved October 2026)
- BSI BS 3388:2004 — forks, shovels and spades (retrieved October 2026)
- Conservation Handbooks — hole digging for a post and wire fence (retrieved October 2026)
- Jacksons Fencing — how deep to dig fence posts (retrieved October 2026)
- Consumer Rights Act 2015 (retrieved October 2026)