Tool saddle height adjustment: a fixed binder bolt with this quickrelease lever to change saddle height in seconds without tools. Ideal when you need fast adjustments between riders, during a commute, or on mixedterrain rides. Solid, reliable locking: Springloaded lever and M6 threading (screw size M6*60mm) deliver a secure clamping force that holds under regular use. Engineered to resist wear for consistent performance. Lightweight aluminum alloy construction: Keeps added weight to a minimum while remaining durable. The clamp weighs just 35 g, so it's suitable for riders who care about overall bike weight. Compact and portable: Overall length 13.2 cm (132 mm) with product dimensions 13 × 13 × 132 mm and a 5 mm diameter skewer bolt. Small enough to store in a saddle bag or pocket for quick replacements on the road. Broad compatibility: Generalfit design works with most standard seat posts and frames that require an M6*60mm screw, making it a straightforward upgrade for many bike and cycle models. Easy installation and use: Installs in place of a traditional binder bolt and operates with a simple flip of the lever for fast, repeatable adjustments without tools. Practical use scenarios: 1) Daily commuter: Quickly lower the saddle to clear curbs or lockups at stops, then restore riding height in seconds—no wrench needed. 2) Weekend group rides: Swap saddle height between riders of different leg lengths or adjust position when switching from flat to hilly sections. 3) Touring and multisurface rides: Keep a lightweight spare in your saddle bag for onthego replacements or adjustments during long trips. Specifications: Material: Aluminum alloy Thread: M6 (screw size M6*60mm) Length: 13.2 cm (132 mm) Product dimensions: 13 × 13 × 132 mm Skewer diameter: 5 mm Weight: 35 g What it solves: Eliminates the need for tools to change saddle height Reduces time and hassle when swapping positions or riders Adds minimal weight while maintaining secure clamping and durability No unnecessary parts or complicated setup—just a compact, tool replacement that fits most standard seat posts and frames requiring an M6*60mm screw.