Length: 4 in usable, 6 in overallDrive size: 1/2 inRock carbide® tip for longer bit lifeEachLength: 4 in usable, 6 in overallDrive size: 1/2 inRock carbide® tip for longer bit lifeDeWalt® Hammer Drill Bit, 1/2 in (Dia) x 4 in (L) Usable x 6 in (OAL)http://s7d5.scene7.com/is/image/Staples/s0481288_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0481288_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0481288/DeWalt-Hammer-Drill-Bit-1-2-in-Dia-x-4-in-L/product_762749DeWalt® Hammer Drill Bit, 1/2 in (Dia) x 4 in (L) Usable x 6 in (OAL)0.00