The has a little notch to stop it turning.
Bicycle seat bolt. CRMO Steel Vintage Seat Post Clamp Binder fixing bolt.
Set Of 4 Oxford Draw Bolt and Nuts for Mudguards Stay Eyelet Bolts
Oxford Chainring Bolt Double - 5 Bolts+5 Nuts
2pcs Bike Seat Clamp, 22mm MTB Seat Clamp Black Mount Bracket Bicycle Bike Saddle Seat Bolt Seatpost Clamp
Oxford: Seat Post Alloy 26.0mm - Silver - 26mm
Oxford: Seat Post 400 x 26.2mm Micro-Adjust - Silver - 26.2mm
