Concrete Hole Saw Kits Tungsten Steel Wall Hole Driller Kit Concrete Cement Stone Wall Drill Bit Set with 160 mm Connecting Rod And Cross Center Drill Bit

Description: The shank extension rod adopts a round shank two pits and two slots design which can be linked to other accessories for small impact drills. Hole opener: core component used for drilling. Adding water can make the opener more durable. Cross center drill: used Positioning when the initial slotting is carried out the wall blood punching and positioning are carried out first and then the deep drilling is carried out. ... Specification: Name: Concrete Hole Opener Material: Carbide Size: total length 160mm*width 80mm/6.29*3.14inch Product List: 1*Handle connecting rod 1*Hole opener 1*fixing screw 1*Cross Center Drill