Amazon | Campagnolo Record 10 Speed 52T Chainring For Use With 39T Inner Ring, Anti-Fricition Coating 135mm BCD by Campagnolo | カンパニョーロ(campagnolo) | チェーンリング
Campagnolo Record (10 Speed) Groupos user reviews : 4.5 out of 5 - 11 reviews - roadbikereview.com