Best Rotary Hammer Extension (2026): 4 SDS Rods and Kits Compared
Four SDS Max and SDS-Plus extension rods and kits for rotary hammers, compared by length, shank, material and kit contents.
On this page
Top picks at a glance
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- 1
Best Complete KitFIVELAKE SDS Max Kit9.7/10View on Amazon - 2
Best Single RodYOSIGHT SDS Max Rod9.6/10View on Amazon - 3
Best ReachQLYMTZ SDS Max Kit9.6/10View on Amazon - 4
Best SDS-Plus PickRegiis SDS-Plus Rod9.5/10View on Amazon
A recessed bolt hole sits past the end of your bit, and the chuck is already against the wall. The hole needs a few more inches of reach, not a bigger hammer. That is the job a rotary hammer extension is made for: a rod that fits between the hammer and the bit, chisel or hole saw so the business end reaches where the tool body cannot. This guide compares the best rotary hammer extension picks by length, shank, material and what comes in the kit.
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Quick picks
- Best Complete Kit FIVELAKE SDS Max Kit: Adapter, 12.48 in rod and grease in one kit, with a pull-down locking system. Check price on Amazon
- Best Single Rod YOSIGHT SDS Max Rod: 12.48 in of 20CrMo steel with SDS Max shanks on both ends, at 1.27 lb. Check price on Amazon
- Best Reach QLYMTZ SDS Max Kit: Adapter and rod combine for 17.5 in of total reach, per the listing. Check price on Amazon
- Best SDS-Plus Pick Regiis SDS-Plus Rod: 12-3/5 in of 40Cr chrome alloy steel for SDS Plus hammers; adapter sold separately. Check price on Amazon
Picks for the garage
FIVELAKE SDS Max to SDS Max Extension Kit
A heavy-duty SDS Max to SDS Max extension kit with a 7.56 in adapter, a 12.48 in extension rod and 15 ml of grease, in 20CrMo steel.
Pros
- Complete kit: adapter, rod and grease included
- 12.48 in rod plus 7.56 in adapter for tight spots
- Pull-down and rotate locking system
- 20CrMo steel for impact and torque
Cons
- No warranty term stated
- No weight stated
- No safety listing stated
- SDS Max only, no SDS Plus fit stated
YOSIGHT 12.48 Inches Long SDS Max Shank Extension
A 12.48 in SDS Max shank extension rod in 20CrMo steel, with a standard SDS Max shank on both ends, at 1.27 lb.
Pros
- 12.48 in for deeper holes in tight areas
- SDS Max shanks on both ends
- 20CrMo steel with corrosion and wear resistance
- Simple installation and removal
Cons
- Rod only, adapter needed
- No warranty term stated
- No safety listing stated
- No grease included
QLYMTZ SDS Max Adapter to SDS Max Extension Shaft
An SDS Max to SDS Max extension kit with an adapter of about 7.5 in and an extension rod of about 13 in, in alloy steel, with a listed total length of 17.5 in.
Pros
- Adapter and rod in one kit
- 17.5 in total length, per the listing
- Alloy steel, high hardness and strength
- Works with drill bits, chisels and hole saws
Cons
- Listing gives three different reach figures
- No warranty term stated
- No safety listing stated
- No weight stated
Regiis Tech 12-3/5'' SDS-Plus Extension Rod,Drill
A 12-3/5 in SDS Plus to SDS Plus extension rod in 40Cr chrome alloy steel, for SDS Plus rotary hammer drills; the adapter is sold separately.
Pros
- 12-3/5 in for longer SDS Plus bits
- 40Cr chrome alloy steel
- Easy installation with an adapter
- Extends shorter SDS Plus drill bits
Cons
- Adapter sold separately
- No warranty term stated
- No safety listing stated
- No weight stated
Compared on paper
| Model | Shop Score | Type | Length | Shank | Material | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| FIVELAKE SDS Max Kit | 9.7/10 | Kit: adapter and rod | 12.48 in rod, 7.56 in adapter | SDS Max | 20CrMo steel | Not stated | Not stated |
| YOSIGHT SDS Max Rod | 9.6/10 | Rod | 12.48 in | SDS Max | 20CrMo steel | 1.27 lb | Not stated |
| QLYMTZ SDS Max Kit | 9.6/10 | Kit: adapter and rod | 17.5 in total | SDS Max | Alloy steel | Not stated | Not stated |
| Regiis SDS-Plus Rod | 9.5/10 | Rod | 12-3/5 in | SDS Plus | 40Cr chrome alloy steel | Not stated | Not stated |
Specifications are manufacturer rated, as published on each listing and collected 6 November 2026. Where a listing contradicts itself, both figures are shown.
How the points were given
Each extension is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. None states a safety listing, so all score zero on safety, and none states a warranty term, so all score zero on warranty.
| Product | Shop Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| FIVELAKE SDS Max Kit | 9.7 | 30 | 22 | 21 | n/a | 0 |
| YOSIGHT SDS Max Rod | 9.6 | 29 | 21 | 20 | n/a | 0 |
| QLYMTZ SDS Max Kit | 9.6 | 28 | 20 | 20 | n/a | 0 |
| Regiis SDS-Plus Rod | 9.5 | 27 | 20 | 18 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
What the listings tell you
We read 4 extension listings. Only 1 states a weight, the YOSIGHT rod at 1.27 lb. Two are complete kits with an adapter and a rod, and only the FIVELAKE kit adds grease. One needs an adapter bought separately, and none states a warranty term or a safety listing. Two list 20CrMo steel, one lists 40Cr chrome alloy steel, and one lists alloy steel.
Buying guide: picking the best rotary hammer extension
SDS Max or SDS Plus
Match the shank to your hammer and your bits. Three of the picks here are SDS Max and one is SDS Plus, and the two do not swap. The SDS Max picks fit SDS Max rotary hammers, drill bits, chisels and hole saws, while the Regiis Tech rod fits SDS Plus bits on an SDS Plus rotary hammer drill.
Length and reach
Reach is the whole point of these rods. The rods here run from 12-3/5 in to 17.5 in of total reach, and the listings describe them for deeper holes in tight or hard-to-reach areas. Check the length against the hole you need to drill, and read the listing twice when its own figures disagree, as one listing here does.
Material
All four picks are steel, and the listings name the grade. Two list 20CrMo steel for hardness, impact resistance and torque tolerance, one lists 40Cr chrome alloy steel, and one lists alloy steel with high hardness and superior strength. A named grade tells you more than a bare claim of strength.
What comes in the kit
Two picks arrive as a kit with an adapter and a rod, and the FIVELAKE kit adds 15 ml of grease. The YOSIGHT listing is the rod only and needs an adapter, and the Regiis Tech rod needs an adapter bought separately. Count the parts before you order, so the first job does not wait on a missing adapter.
Use rated jack stands on solid ground, wear eye protection with power and air tools, keep fuel-burning equipment out of a closed garage, and follow the manual for every tool. Read our Safety Disclaimer.
Garage Fit Check
- Check the shank first: 3 picks are SDS Max and 1 is SDS Plus, and the shank must match your hammer and bits.
- Check the length against the job: the rods here run from 12-3/5 in to 17.5 in of total reach.
- Check what is in the box: 2 picks include an adapter, the Regiis Tech rod needs one bought separately, and only the FIVELAKE kit includes grease.
- Check the weight if you work with the rod held high: only the YOSIGHT rod states a weight, at 1.27 lb.
- Keep the shanks clean and the grease on hand: the FIVELAKE kit includes 15 ml of grease for smooth operation.
FAQ: garage tools
Is a rotary hammer a drill?
A rotary hammer is a drilling tool for construction and demolition work, and it takes SDS bits and chisels. An extension rod fits between the hammer and the bit, chisel or hole saw to add reach.
Can a rotary hammer drill wood?
None of the listings here lists wood as a material. They describe drill bits, chisels and hole saws for rotary hammer work, so match the bit to the material and check the listing before the first hole.
What is an SDS Max extension rod for?
It fits between a rotary hammer and a bit, chisel or hole saw to drill deeper holes in tight or hard-to-reach areas.
Do I need an adapter for the Regiis Tech rod?
Yes. The Regiis Tech listing states the adapter is sold separately, so you need an SDS Plus adapter to fit the rod to your rotary hammer drill.
Related: the best rotary hammer for the money, the best rotary hammer cordless, cold chisel vs air hammer, titanium vs cobalt drill bits and hammer drill vs impact driver. Also see our /Cordless Tools/ hub.
