Features: 1. Made of titanium alloy, which is high strength, lightweight, wearable, corrosion resistant and durable. 2. Suitable for fixing the stem, front and rear derailleurs grip ring, seat post clamp, and front and rear derailleurs. 3. Finely crafted, polishing grinding, great accessory for mountain bikes. 4. Rust prevention, lightweight and small size, easy and convenient to carry. 5. Three colors are optional to meet different demands. Specifications: Material: TC4 Titanium Alloy Color: Titanium, Multi color, Gold (optional) Package Weight: approx. 27g Size: 16 * 5 * 8.4 * 5mm / 0.63 * 0.2 * 0.3 * 0.2inch Quantity: 6pcs Package Included: 6 x Bike Stem Bolts Note: It can be installed with No. 4 hex wrench that is not included in this product.