Experience Smooth Riding with 10 12 14 16T Aluminum Bicycle Derailleur Jockey Wheels Ceramic Bearings

Product Title: Dual Direction Ceramic Guide Wheel for Teeth Model: TL-089 Build: 7075 Aluminum Alloy paired with Ceramic Ball Bearings Shades: Black, Red, Blue, Iridescent Options: 10T, 12T, 14T, 16T Center Hole: 6mm (includes reducing sleeves for 4mm and 5mm) Mass: Roughly 11g (10T), 13g (12T), 16g (14T), 22g (16T) Size: φ44x7.7mm (10T), φ52x7.7mm (12T), φ59.5x7.9mm (14T), φ68x7.9mm (16T) Use: Fits some derailleur pulleys, short-leg derailers (10T); most medium/long-leg and road derailers (12T); long-leg derailers (14T); select derailers (16T). Attributes: Crafted from aluminum alloy, featuring a lightweight hollow layout, CNC precision machining, anodized surface, vibrant color selection, ceramic bearings, self-lubricating for optimal smoothness; enhanced performance with paired gear installation. Advisory: Incompatible with 12-speed road bikes; usable with 12-speed . Supports 12-speed /road chains when a quick-link is used; incompatible without quick-link. PURCHASE GUIDANCE Distinguishing between tension and guiding pulleys isn't needed; dual replacement is preferable. For swapping, merely verify diameter and fastener size (4/5/6mm). Might not suit original derailers with 11T gears having mudguards. Package: 1 piece included Reminder: The image is not actual size, consult Description for dimensions. Acknowledge manual measurement variations. Images might differ due to monitor discrepancies. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.