Wall Drill Bit Hole Saw Set with SDS PLUS (SDS) Shaft With Hole Saw With Core Drill Bit for Masonry Concrete Brick Stone 1.38in35mmBy Dopow *Exquisite craftsmanship:CNC turning, ultra-high temperature welding and grinding *Complete specifications:30mm-160mm1.18In-6.3In)Series complete *Wide range of applications:Red brick wall, cement wall, air conditioning hole, water pipe hole, soot hole, room decoration hole *High-quality materials:Tungsten cobalt alloy head, The main body of steel, YG8 alloy *Easy installation:Wear wrench for easy installationEasy to replace the different specifications of the shank