Features: Our 5x12mm stainless Steels water bottle cage screws provide a secure and fastening solution for your bike accessories. Bike screw Kettles holder screw is suitable for most bike with a standard 5mm water bottle cage. Make of stainless Steels materials, strong, enduring, and rustproof. Suitable for most bikes and cages, and can also be apply in other place where 5mm screw bolts is need. The size and designs of the screws have been accurately calculated to provide sufficient tightening force to ensure that the Kettles holder is firmly fixed to the bicycles, avoiding vibrations and loosening. Specifications: Materials: 304 stainless Steels Color: Silver/Black/Redness/Blue/Purpleness/Green/Gold/Colorful/ Thread: about 5x12mm/0.20x0.47inch Package Includes: 4pcs Water Bottle Cage Bolts note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.