TOOPRE OTR35 is a narrow-wide ceramic bearing pulley for compatible rear derailleurs. Its CNC-machined 7075 aluminium body combines alternating tooth widths, a hollow design and a black anodised finish. Choose 10T or 12T. Each purchase includes one pulley and 4 mm and 5 mm reducer sleeves. Ready stock. Confirm derailleur, chain and mounting compatibility before purchase.