1 set Combination Drill Screw Tap Bit Set & 5 PCS Pulley Block1.Made of stainless steel with high hardness, corrosion and rust resistant, strong and sturdy.2.Anti-rust and wear-resistance with strong structure, with shock light processing surface, sturdy and durable3.Fixed top for easy rope handling, smooth roller make the rope traverse unimpeded4.The pulleys for lifting with rope workable with rope or cord indoor and outdoor for flexible sliding pulley. Easy installation for large kayaks,5.Suitable for large kayaks, canoes, factories, construction, shipping, mining, household, Garage, Machine Loading, Curtain, Clothes Line, Dog Pulley System etc.Caution:When you use this drill bits, the material temperature will get very high, please add some water or coolant to avoid the material get smoke when using it.Screw Tap Bit:1.High hardness, rustproof, solid and durable.2.The advantage is opening, tapping, chamfering.3.Self-centering point, do not need assistant center drilling or center punching.4.Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.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.Metric:M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5.Shank:1/4 inch (6.35mm) hex shankThe Automatic Center Punch delivering an automatic spring-driven strike when pressed against surface, it can be adjusted cap regulates striking forceWidely Use:Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc. Note:Low Speed and Cutting holes in materials (Thickness:Less than3mm)Size:M3, M4, M5, M6, M8, M10Usage:Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc.colour:GoldenMaterial:High speed steelPulley Blocks:Type:PulleyColour:SilverMaterial:stainless steelSize:25mmPackage Contents:6 * Screw Tap Bit1 * Center Punch Tool5 * Pulley BlocksOnly the above package content, other products are not included.Note: Light shooting 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.