Wall Hole Drill Bit 80mm Hole Saw Cutter 390mm Drilling Depth Round Shank with Connecting Rod for SDS X4 Impact Drill

Description: QUALITY MATERIAL: Made of carbide tipped material of ultra-sturdiness durability for years. SIMPLE TO USE: Simple operation easy to use and fast perforated. WIDE USE: Used for drilling walls stones bricks or installation of air-conditioning etc.. SPECIAL SHANK DESIGN: Special direct system shank male thread adapter replace the broken adapter with drill chuck. WELDING TECHNOLOGY: High-frequency welding technology welding openings is very strong smooth inside and outside welding mouth. Notice: In order to make the locking screw more stable on the drill and for your safety please to use it as the clockwise when you drill the wall holes.