6pcs 1/4 Hex Shank HSS Thread Metric Composite Tap Drill Bits M3-M10 Hand Tools Screw Machine Blue-plated Compound TappingFeature:1. Using high-quality high-speed steel, high hardness, durable.2. 1/4 hex shank HSS metric right-hand thread tap and conical drill.3. Combination of hole tapping and chamfering, convenient operation, hand electric drill, bench drill, and hexagonal chuck tapping machine are optional.4. Processing: wood, plastic, aluminum, tin alloy, magnesium alloy, the thickness of the workpiece is less than 5mm/0.2in. Specification:Material: High speed steelBox size: 107x75x15mm/4.21x2.95x0.59inShank diameter: 6.35mmSpecifications: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5Quantity: 6pcsNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2mm measuring deviation due to manual measurement. 6 X Tap Bits