[Functional] - The bicycle stem titanium bolt is great for fixing water bottle holder, handlebar stem, bike disc brake caliper, grip ring front and rear derailleurs, seatpost clamp, and front and rear derailleurs. [Material] - The bicycle bike brake lever screws are made of high quality titanium alloy, high strength, good toughness, lightweight, rust-resistant, corrosion-resistant, wear-resistant and durable. [Installation] - This is a road bike inner hex threaded screw M6x18 MTB, and comes with a washer, installation with a wrench or a wrench, tighten the appropriate intensity on it. [Wide Application] - The M6x18mm hex socket cone head screw for bike can be applied for mountain bike, bicycle, motorcycle, automobile, racing, DIY areas, replacement accessories for your old worn screws. [Package Include] - 6pcs mountain road bike stem bolts with washer; Material: titanium alloy; Size: approx. the body is (diameter) 6mm x (height) 18mm, the head is (diameter) 7.8mm x (height) 6.6mm; Weight: about 3.5g/pcs. getveryrich Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and temperature. display, there will be a certain color difference, the actual object received shall prevail.