Secure Fastening and Stable Ride Precisionengineered clamping system reduces slippage and holds saddle position firmly, even on rough roads or during aggressive riding. Prevents sudden seat drop and minimizes micromovement for a more consistent riding posture. Tool Quick Release Quick release design lets you adjust seat height in seconds without tools. The generalfit M5 thread (approx. 5×45 mm) provides a responsive, secure clamp action for frames that accept an M5x45 bolt. Simple, Direct Installation Dropin replacement for most standard seat bolts: insert, align, and tighten. Designed for straightforward swapouts with minimal mechanical skill required. Note: actual color may vary slightly due to lighting or screen calibration; small measurement tolerances are possible from manual handling. Materials, Size, and Weight Component: M5x45 quick release seat clamp bolt. Thread: M5 (approx. 5×45 mm). Material: Aluminum alloy for a reliable balance of strength and reduced weight. Package: One bolt included. Weight: Approximately 206 g. Why you need it Keeps saddle securely in place under load and on uneven terrain. Saves time and eliminates the need for tools when making frequent height adjustments. Lightweight aluminum construction reduces added mass compared with heavier steel replacements while maintaining clamping strength. Compatibility Fits most standard bicycles that accept an M5x45 seat clamp bolt. Confirm your frame's bolt thread and length before . Practical use scenarios 1. Commuters sharing a bike: Quickly adjust saddle height between riders during short stops without tools. 2. Trail and mountain riders: Maintain saddle position on technical, bumpy terrain where a reliable clamp prevents seat rotation or drop. 3. Training and interval rides: Make fast seatheight changes between efforts or riders during group training or events. What's included One aluminum alloy M5x45 quick release seat clamp bolt (approx. 206 g). Notes Verify thread compatibility (M5, 5×45 mm) with your bike frame before installation. Minor size deviations and slight color differences may occur due to manual measurement and photographic settings.