Hole Saw Tools in One Kit: Our concrete hole saw kit provides 10PCS, including 1-2/11" to 3-15/16"(30-100 mm) of hole saws, SDS PLUS and SDS MAX shanks, 2 pcs 4-1/3"(110mm) pilot drill bits. Easily store and carry our hole saw tool kit in our zip-up storage case made of aluminum. 135° Sharp Pilot Drill Bit: The 135-degree pilot drill bit ensures you open the wall hole in precisely the right place every time. And the multi-edged blades of the hole saw are designed to make your drilling cleaner, faster, and more efficient. The chip removal hole can quickly remove dust, thus preventing clogging. Premium Material: Hole saw for masonry is made of high-quality carbon steel. It is sturdy and durable. They are sharp enough to open the wall and wear-resisted. And the connecting rods with 40CR steel are rigid and not easy to break.

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