More informationWide/narrow oval chainring for Sram Gxp system. Made of CNC machined 7075-T6 aluminum, more durable and lighter. 6 mm offset. Compatible with 9, 10, 11, or 12 speed transmissions. Available in 7 colors with laser graphics. Weight : from 57 gr to 80 grMeasurements: 28T, 30T, 32T, & 34TColors: Black, blue, gold, lime green, orange, purple and red.