XINGYHENG 4Pcs Bicycle Seat Clamp Mountain Bike Road 28.6mm 31.8mm 34.9mm Aluminum Alloy Bike Bicycle Quick Release Seatpost Clamp Ring Fittings Black (31.8mm)

• 1.Material: It is made of hard-wearing aluminum alloy, which is stable and long life, has excellent elasticity and fatigue resistance, durable metal allow for better and smooth operation, provide additional durability for appropriate tension and variable precision. 2.Package including: 5pcs bicycle seat clamp. 28.6mm Bike Seat post clamp apply for out diameter 25.4mm/1’’ bicycle frame seat post. 31.8mm Bike Seat post clamp apply for out diameter 27.2mm/1.07’’ to 28.6mm/1.1’’ bicycle frame seat post. 34.9mm Bike Seat post clamp apply for out diameter 30.4mm/1.2’’ to 32.1mm/1.26’’ bicycle frame seat post. 3.Unique design: Ergonomic design, without external key tool, more efficient. Quick release bike seat clamp, Seat clamp with extra long quick release lever for added clamping force,is great for quick and simple adjustments. You can adjust your bike seat anytime, anywhere, make adjusting seatpost height a breeze, super easy to lock and release. 4.Convenient and practical: A strong sleek retaining bolt ensures it to be sturdy and firm. Operation is smooth and easy, easy to install and use. Lightweight and portable, convenient for riding a long journey. 5.Widely use:  It is suitable for all kinds of bike, mountain bike, folding bike, track bike, fixed gear, road bike and so on.