Hot Sale 13pcs Hex Shank Cobalt Drill Bit Set Material:Steel Length: 6~11.7cm/2.36"~4.61"(Approx.) Specification: 1.5mm 2.0mm 2.5mm 3.0mm 3.2mm 3.5mm 4.0mm 4.5mm 4.8mm 5.0mm 5.5mm 6.0mm 6 Quantity: 1 set(13pcs) 100% brand new and high quality