1Pc Aluminum Alloy Bike Seat Post Clamp - 31.8mm & 34.9mm, Fits Seat Post Diameters 27.2/28.6/30.4/30.8/30.9/31.6mm, Sandblasted

1Pc Aluminum Alloy Bike Seat Post Clamp - 31.8mm & 34.9mm, Fits Seat Post Diameters 27.2/28.6/30.4/30.8/30.9/31.6mm, Sandblasted

Aliexpress UK