300 PCS Drills & Bits Set H.S.S. TWIST DRILLS WOOD BORING DRILL BITS SCREWDRIVER BIT MASONRY DRILL BIT 300 PCS Drills & Bits Set 66-H.S.S. TWIST DRILLS 1.0X5, 1.5X5, 2.0X5, 2.5X5, 3.0X5, 3.2X5, 3.5X5, 4.0X5, 4.5X4MM 4.8X4, 5.0X4, 5.5X4, 6.0, 6.5, 7.0, 7.5, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0MM 50-TITANIUM COATED HIGH SPEED DRILL BITS 1.0X4, 1.5X4, 2.0X4, 2.5X4, 3.0X4, 3.2X4, 3.5X4, 4.0X4MM 4.5X2, 4. ...