Brand New Hope Quick Release QR Seat Seatpost Clamp - All Colors and Sizes. Full manufacturer's warranty. Item Specifications:Universal collar can be easily swapped from bolt to qrAvailable sizes: 28.6, 30, 31.8, 34.9, 36.4 and 38.5mm Available colors: Black, Blue, Orange, Purple, Red and SilverMaterial 2014 T6 Aluminium and Brass Free shipping within US. International bidders please see shipping details. Payment is due within 48 hours after the auction closes (Ebay regulation). An Unpaid Item case will be filed after that. 30 DAYS MONEY BACK GUARANTEE on qualified items. Please see Return Policy for details. If you have any questions please feel free to ask. Thank you. Don't forget to check out our other cycling related items at a discount price!