11 Teeth Mountain Bike Ceramics Wheel Rear Derailleur Guide Pulley Roller Bicycle Aluminium Alloy BearingBlack

Feature: 1. 6061 aluminium alloy, after milling, polishing, anodic oxidation and other processes, show us with exquisite metal texture. 2. The main body adopts hollow design, making it more lightweught. 3. New snap spring structure, not block chain when cycling, 11 teeth suitable for 8, 9, 10, 11 speed. The outer Diameter of the rear mounting shaft is compatible with 4, 5 and 6mm. 4. Using ZrO ceramic ball, lubricant and maintenance free, higher transmission efficiency, less effort to ride, lightweight aluminum alloy, hollow turning and flexible rotation. 5. With the new type of snap spring fixed structure, solve the problem of blocking chain, to ensure the smooth and stable operation of the rear dial. Specification: Condition: 100percent Brand New Item Type: Ceramics Bearing Guide Pulley Material: Aluminum Alloy + Ceramics Ball Bearing Optional Color: Red, Green, Blue, Black Quantity: 1PCS Box Tooth Number: 11T Weight: Approx. 24g Inner Diameter: Approx. 6mm 0.24inch(With Variable Diameter 5 4mm) Thickness: Approx. 8.4mm 0.33inch. Package List: 1 x Ceramics Bearing Guide Pulley 2 x Accessories