RaceFace 1x Narrow Wide Chainring - 30t 104 BCD 10-12-Speed 7075 Aluminum OrangeRaceFace Narrow Wide Chainrings feature tooth profiling for chain retention and a blend of weight and durability suitable for XC DH and everything in between. 7075 T6 aluminum aerospace grade strength Compatible with 9 10 11 and 12 speed Stiff 4mm plate thickness and I beam construction transfer loads without flexing Reversible laser etched graphics Ring Position Type Chain Retaining Single Ring Tooth Count 30, 32, 34, 36, 38 Drivetrain Speeds 10, 11,