[Fine workmanship]Preferred high-quality aluminum alloy material, light weight, high strength. The whole is treated with electroplating and process, using CNC machining turning knurling design, rich in gloss; the handle is removable, and the texture on the of the handle adopts anti-slip design, and wear-. [ Design]The tool is widely used. There are aluminum alloy upper and lower pressure blocks for most specifications; two flat thrust bearings on both sides, ball bearing design makes it more stable in use; stainless steel screws with tight and meticulous pitch. Make your operation time-saving and labor-saving at the same time not damage your bike frame. [Easy to Use]According to your frame model, you can choose the right size of pressure block for assembling the headset to adjust the position, the pressure block plays the role of guiding and positioning, with the double side of the plane thrust bearing, to help stabilize, not easy to the crooked, bending, to protect the frame and the headset. Match with stainless steel nut, use both hands to keep applying pressure slowly to install the headset. [Applicable Models] Suitable for most of the common headsets and some -in bottom brackets on the market. [Dimensions]The thread diameter of the bolt is 0.66 inches (17 mm) (nominal diameter is 12 mm), and the length of the bolt is about 30 mm (1.18 inches) for up to 135 mm wide. Color: Black Material: Aluminum Alloy Package Contents: 1 * Bike Bottom Bracket Tool Only 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.