SRAM RED Aero X-Sync Direct Mount Chainring - 50t 12-Speed 8-Bolt Direct Mount 6.5mm Offet BLK E1 CheckoutTitle=RaceFace Narrow Wide Direct Mount CINCH Aluminum Chainring - for Shimano 12-Speed Weight 49 Shaft Type Smooth MFPN=100867-9900-05 B-HL2422 One kit rebuilds 2 Color:Dark Sapphire Melange

SRAM RED Aero X Sync Direct Mount Chainring 50t 12 Speed 8 Bolt Direct Mount 6.5mm Offet BLK E1 CheckoutTitle=RaceFace Narrow Wide Direct Mount CINCH Aluminum Chainring for Shimano 12 Speed Weight 49 Shaft Type Smooth MFPN=100867 9900 05 B HL2422 One kit rebuilds 2 Color:Dark Sapphire Melange Weight 49 Shaft Type Smooth Tube Compound Thermoplastic Elastomer ISO Width (mm) 33 ISO Width (mm) 34 ISO Width (mm) 35 ISO Width (mm) 36 ISO Width (mm) 37 ISO Width (mm) 38 ISO Width (mm) 39 ISO Width (mm) 40 ISO Width (mm) 41 ISO Width (mm) 42 ISO Width (mm) 43 ISO Width (mm) 44 ISO Width (mm) 45 ISO Diameter 622 Road 29" Valve Core Removable Labeled Size 700 x 33 45 Valve Presta Long 56 74mm Drawing from the premium 110 Series design the 40 Series includes all the features necessary for a durable lightweight long lasting headset