With tungsten Carbide tips and internal M16Mounting. Packaging: Tube. Pilot Bit: for use with drive adapter. Packaing plastic wallet. Drive adapter: for use with pilot bit 3 and core bit: packaging Tube. For the professional use. Deep drilling by using extension shank. To be used on rotary and hammer drills. Applied to concrete, stone, masonry and bricks. Dia. 25-125mm (1"-5") Total Length: 72mm Working Length: 107mm