Is the SDS end for 1/2” or 3/8”?

I believe you can bye either one 3/8 or 1/2 inch!!!

How thick of a concrete wall will it cut through?

Believe it or not used this to drill 3---2 1/2 holes thru 12 inch thick poured concrete walls (one cut thru embeded #4 rebar) no breakage, all carbide still in one piece AMAZED THE HECK OUT OF ME!!!!!!!!

How do you unscrew the hole saw from the connecting rod.; it is frozen after drilling ,anyone have this problem ?

soak it in wd 40 / diesel fuel or Marvel Mistry oil, them place the cutter on wood and tap on the shank lightly to loosen it up, it should work

What is the size of the set screw ?

Carlos, The setscrew is M6 x 1.0 thread and is 8 mm long. IMO, the setscrew provided if not well hardened, it's point is easily deformed and will come loose during drilling. Once loose, it can / will fall out of the drive adapter. A good metric setscrew can be purchased at a quality hardware store or at one of the national fastener outlets. Should the hex key be misplaced, it is a 3.0 size.

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Hole Saw Kit, 4pc Drill Hole Cutter Set with 30 50 65mm Hole Drill Bits for SDS Plus Hammer Drills, Circle Drill Bits Hole Saw Set for Concrete Brick Cement Stone Wall Drilling Home Improvement

Product ID: 111701556

Details

Material
Chromium Steel
Brand
ZELCAN
Color
Silver
Style
Industrial
Item Weight
1.5 Kilograms

🔩SDS Plus compatible shank

⚙️4-in-1 versatile hole saw kit

🛠️Chromium steel & tungsten alloy durability

KSh9612

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Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔨 Drill Like a Pro, Finish Like a Boss!

BUILT TO OUTLAST - Crafted from premium chromium steel and tungsten alloy to withstand the toughest concrete, brick, and stone jobs.
QUICK SWAP EFFICIENCY - Switch between hole saw sizes in seconds to keep your workflow smooth and your projects on schedule.
PRECISION IN EVERY PUNCH - Three hole saw sizes (30, 50, 65mm) plus a 4.4" pilot drill for flawless, clean cuts every time.
EFFORTLESS MATERIAL MASTERY - Drills through concrete, brick, cement, adobe, and stone—perfect for professional-grade home improvement projects.
SEAMLESS SDS PLUS COMPATIBILITY - Custom shank fits all major SDS Plus hammer drills, turning your tool into a multi-tasking powerhouse.

The ZELCAN Hole Saw Kit is a 4-piece drill bit set featuring three hole saw sizes (30, 50, 65mm) and a 4.4" pilot drill bit, designed for SDS Plus hammer drills. Made from durable chromium steel and tungsten alloy, it effortlessly cuts through concrete, brick, cement, adobe, and stone. Engineered for quick bit changes and wide compatibility, this kit is ideal for professional and DIY home improvement projects requiring clean, precise holes.

Specifications

ASIN	B07FQ8RWTJ
Best Sellers Rank	#137,309 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #84 in Hole Saw Sets & Kits
Brand	ZELCAN
Brand Name	ZELCAN
Color	Silver
Compatible Devices	SDS Plus hammer drills
Compatible Material	Foam, Stone
Customer Reviews	4.3 out of 5 stars 1,684 Reviews
Included Components	3x Hole Saw Bits,1x Connecting Rod,1x Pilot Drill Bit,1x Hex Bolt,1x Hex Wrench
Item Weight	1.5 kg
Manufacturer	ZELCAN
Material	Chromium Steel and Tungsten Alloy
Material Type	Chromium Steel and Tungsten Alloy
Model	COZSDS3565
Number of Items	6
Part Number	SDS-2022-3P
Set Name	Zelcan Hole Saw Kit
Style	Industrial
Style Name	Industrial
Unit Count	1 Count
Warranty Description	1 year

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