order bynameprice AUTHOR Seat clamp ACO-315 Double bolt clamp Author. This double bolt clamp design will keep your seatpost in place. Frame seat tube d. 34,9 and seat post d.31,6mm. Material: ... AUTHOR Quick-release clamp AQR-AGLab I The Author QR seat clamp. With its ergonomic lever it’s easy to adjust the seat height for uphill and downhill sections. Lightweight design ... AUTHOR Quick release clamp AQR-Simplex The Author QR seat clamp. With its ergonomic lever it’s easy & quick to adjust the seat height. Lightweight design and durable alloy material. For ... AUTHOR Quick-release clamp AQR-C13 The AUTHOR AQR-13 seat clamp. QR lever that allows you to easily adjust the height of your seatpost. Lightweight design and durable alloy material. Available ... AUTHOR Quick-release clamp AQR-C09 The AUTHOR AQR-C09 seat clamp. QR lever that allows you to easily adjust the height of your seatpost. Lightweight design and durable alloy material. Available ... AUTHOR Seat clamp ACO-A205 The AUTHOR seatclamp is made from lightweight alloy for great looks and exceptional durability. The bolt and nut are made from steel for long lasting ... pg. 1 of 11