Easy Quick Release Adjustment: The ergonomic quick release wrench lets you adjust seat height with one hand, no tools needed ideal for on the go riders switching between terrains or riders. Ultra Lightweight & Durable: Crafted from aluminum alloy, this bike seat post clamp weighs just 30 60g and resists rust and corrosion, ensuring long lasting performance in any weather. Secure Fit for Most Bikes: Designed to fit mountain, road, folding, and fat tire bikes perfectly choose the right size for your seat tube to prevent wobbling and keep your ride stable. Reliable Grip on Rough Trails: Precision machined clamping surfaces distribute pressure evenly, holding your seat tube firmly in place so it won’t slip during bumpy rides or heavy pedaling. Compatible with Lift Seat Posts: The widened clamp design works smoothly with standard and telescopic lift seat posts, enhancing your bike’s functionality without compromising comfort or control. Description: This ultra lightweight bike seat post clamp, weighing only 30 60 grams, combines durability with a sleek anodized surface that resists rust and corrosion even after exposure to rain or water. Designed to fit most mountain, road, folding, and fat tire bikes, it ensures a secure fit when matched to your frame’s seat tube diameter. The ergonomic quick release lever enables effortless one handed seat height adjustments without tools, perfect for on the go changes during city commutes or rugged off road rides. Precision machined clamping surfaces distribute pressure evenly, preventing seat tube slippage on rough terrain or intense pedaling. Compatible with standard and lift seat posts, its widened clamp design maintains smooth telescopic function for an enhanced riding experience. Item Name: Bike Seat Post Clamp Material: Aluminum Alloy Features: Lightweight, Quick Release, Bike Accessory Size Details: S(28.6mm): Suitable for 25.4mm Seatpost M(31.8mm): Suitable for 27.2/28.6mm Seatpost L(34.9mm): Suitable for 31.8mm Seatpost Clamp Size: 6cm x 5cm x 2cm/2.36" x 1.97" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Seat Tube Clamp