The Original one and only Absoluteblack premium Sram Gxp compatible Direct mount 1X Oval traction chainrings are designed for gxp and Long BB30 spindle cranks. Fits Sram 10/11spd XX1, X01, Eagle 12spd and others. Also replaces 76bcd chainrings to convert to direct mount solution. They are 100-percent optimized for Eagle. 6mm offset Size (Weight): 26T (48g) 28T (50g) 30T (55g) 32T (59g) 34T(66g) Compatibility: SRAM XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, X1-1400, GX-1400, X0, X9, X7, S2210, S1400 and Truvativ Descendant cranks. GXP and Long spindle BB30 models (15mm spacer on drive side) 9, 10, 11 and 12spd Eagle compatible. Materials: CNC machined 7075 Txxx Aluminum. Long-lasting construction Chainline: Perfect 49mm (improved). 6mm offset Mounting: Direct Mount Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3deg after TDC (top dead center) Patent Pending Advantages of our special Oval chainrings: Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically Designed to handle mud and grass with easy Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. Reduces stress on knees and helps to maintain your legs fresher for longer. You will not feel the oval shape at all.