Material: Made of high quality material for premium capability and durability.Drill tap bits - M3x0.5 M4x0.7 M5x0.8 M6x1 M8x1.25 M10x1.5. Short size is not easy to shake and can drill accurately.This tap set includes SAE , so it has high versatility. Each tap drill is engraved with a label, which is convenient for you to choose the size that suits you. The convenient 1/4-inch (6.35mm) quick change hex has a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread.Fast replacement composite cone uses drill edged principle Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.Widely Use: Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc. Note:Low Speed and Cutting holes in materials (Thickness: less than 3mm)colour:GoldenMaterial:High speed steel + titaniumsize: 100 x 70 x 7mmPackage Contents:6 x Drill Tap BitOnly the above package content, other products are not included.Note: Light 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.