Application For conditioning openings, concrete walls and brickRounds blade combinations, each blade to bear part of the workload, not prone to chipping off the edgeHigh-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth, precision , appearance.colour:SilverMaterial:Cemented carbidesize:Carbide Tip size : 30mm, 40mm, 50mmLong Shaft size: approx. 200mmDrill bit length: approx. 110mmPackage contents:3 x Carbide Tip 1 x Long Shaft1 x Drill Bit1 x WrenchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.