aluminum alloy, these CClips Clamps are , , compact and not loose. It is applicable to the brake/shifts cable organizers, suitable for bicycles lines pipe fixation, fit on bikes fork & frame. Whether you're hitting the trails or cruisings through the citys, these CClips that your bike cable stay securely in place, allowing for smooth gear shifting and braking. These housing hoses guide clamps are suitable for most mountain bikes, road bikes, children bikes, folding bikes, . Designed for avids cyclists and mountain bike enthusiasts, these Clamps are a must have accessory for anyone looking to maintain the performances and functionality of their bike cable .