For speed, life and endurance, choose The Dewalt DT9834 Extreme 2 SDS Plus Drill Bits The Dewalt DT9834 is a pack of 10 Extreme 2 SDS Plus Drill bits of superior carbide grade which are all 10mm in Diameter with a working length of 100mm. The Innovative EXTREME 2 SDS-Plus drill bit is amongst the best in terms of its speed, life and endurance.  Features:  Optimised flute design allows efficient debris removal  Hardened body for extra strength and reduced breakage  Superior carbide grade for long life and greater durability New tip design ensures better bit penetration, longer life, faster drilling and greater durability   Specification:  Pack Qty: 10  Weight: 1.5kg  Length: 160mm  Diameter: 10mm  Working Length: 100mm