Quick realease. Steel bolt with alloy lever.
Quick Release bike cycle Bicycle QR Seat Post Clamp Skewer X 2
Quick Release bike cycle Bicycle QR Seat Post Clamp Skewer
Steel QR Quick Release Skewer Cycle Axle Hub Lever for Bike Wheel Front or Rear
ETC QR Quick Release Bicycle / Cycle Seat Post Clamp Silver 34.9
2Pcs Bicycle Seatpost Clamps, Quick Release Bike Seat Tube Clamp Aluminum Alloy Release Saddle Clip, 28.6mm+31.8mm Seat Lock Clamp Accessories for 25.4mm 27.2mm 28.6mm Seatpost
HOgardenME Bike Seat Clamp, 38mm Quick Release Bike Seat Clamp Bike Frame Seat Clamps with Quick Lever Anti Slip Hollow Frame Seat Tube
