Diameter: : 5.5mm Working Length: : 100mm Overall Length: : 160mm features: SDS Drill Bit 5.5 x 160 mm SDS Plus, ensures maximum power transmission due to its unique fluted shaft. This effectively removes situations where a perfectly serviceable cutting edge is rendered useless by a worn shank.The SDS Plus system also enables faster changing of drills using a quick release keyless chuck. For use in bricks, concrete, marble and hard stone etc. Heavy-Duty Tungsten Carbide tip.