"IRWIN" HAMMER DRILL BIT Dia.xO.A Lgth. Ins.=3/16 x 6 Fits all SDS-plus and Hilti TE-C rotary hammers. Reduced area above the flute prevents the drill bit from binding while drilling. The full usable length can be utilized. Chrome vanadium shaft through-hardened to 50-53HrC. Patented tip and flute design rem~oves dust