12Pcs 35mm to 110mm SDS Plus Shank Masonry Hole Saw Cutter Wall Drill Bit Kit, Extension Shank Drill Bit Cutting Tools with Wrench for Brick Concrete Cement Stone
- packaging specifications :2* long connecting rod + 6* core drill +4* center positioning guide rail + 2* positioning drill screw.
- widely used for installing air conditioners, range hoods, sewage pipe openings, etc.Mainly engaged in wall, brick structure, such as red brick, cement, etc..
- high-frequency welding technology, the welding hole is very firm, the inside and outside of the welding smooth..
- use the impact + rotation function of electric hammer to operate hollow brick holes and pipe holes in walls and hollow bricks..