PCB Drill Bits: 10 different sizes; Shank Dia.: 3.175mm / 1/8 inch. High hardness, high wear resistance, high strength, resistance to bending. Drill PC boards, plastic, fiberglass, wood, soft metal.Drill Bits Set: 26 different sizes of bits: 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm. High hardness and toughness, wear resistance. Sharp cutting edge provides smooth cutting.Colour: Blackmaterial: metalPackage Contents:10pcs x PCB Bits (1pcs of each size)48pcs x Twist Bits (3pcs of 0.5mm-1.0mm size, 2pcs of 1.1mm-2.0mm size, 1pcs of 2.1mm-3.0mm size)1pcs x Pin Vise1pcs x Bench ViceOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.