Other

- AL6061-T6 alloy quick-release seatpost clamp - Stainless steel bushing ensures smooth lever action - Adjustment knob allows for on-the-fly fine-tuning - Rounded edges and floating bolt/ovalized hole design protects carbon frames and seatposts - 28.6mm for 25.4mm seatpost and steel frame - 29.8mm for 27.2mm seatpost and chromoly frame - 31.8mm for 27.2mm seatpost and aluminum frame - 34.9mm for 30.9mm seatpost and aluminum frame, or 31.6mm seatpost and carbon frame - 16mm height

- AL6061-T6 alloy quick-release seatpost clamp with CNC machined cut-outs - Stainless steel bushing ensures smooth lever action - Rounded edges and floating bolt/ovalized hole design protects carbon frames and seatposts - 29.8mm for 27.2mm seatpost and chromoly frame - 31.8mm for 27.2mm seatpost and aluminum frame - 34.9mm for 30.9mm seatpost and aluminum frame, or 31.6mm seatpost and carbon frame - 16mm height

Origin-8's Pro Force QR Seat Clamp is forged and machined from light and durable aluminum and has an extra-leverage design to hold fast. This fine clamp boasts an anodized finish and a long quick-release lever for excellent clamping force. It also gives you more to hold onto so it's easier to raise/lower your seat.