TINOR Hole Saw Drill Bit, Ø30mm, 40mm, 50mm Hole Saw Set, Concrete Drill Bit 350mm sds Plus Extension Rod Tungsten Carbide Tip, Hole Saw for Brick Stone

【PACKAGE LIST】: Ø30mm, 40mm, 50mm drill bits, SDS+ shafts, pilot drills and 350mm SDS+ extension rod; This high-quality TCT concrete hole saw set contains everything you need to get started. 【NECESSARY PARTS INCLUDED】: This core drill set comes with 1 locking screw and 1 pilot drill bit, it is quite practical to help stabilize the drilling process, ensure the tip of the drill bit will not move when you are drilling. 【PREMIUM MATERIAL】: This masonry drill bit set is made of high-quality tungsten carbide tipped material, high strength and excellent drilling performance for long-term tough drilling work, also durable enough to last for a long time. 【PRECISE CUTTING】: These are tungsten carbide tipped drill bits that are perfect for cutting clean holes in concrete, brick, and cinder block. 【WIDE 【USE】: Suitable for brick walls, red bricks, masonry walls, foam bricks, hollow cores, etc. It can be used to install air conditioners, such as air conditioners, range hoods or washing machines.