CNC Machined 7075 Aluminum Alloy. Light Weight with Great Strength and High Performance.
Bolt Center Diameter: 144mm; Plate Thickness: 4mm; Chain Compatibility : 1/2" x 1/8".
Chainring net weight: 81grams or 2.86oz(44T); 96grams or 3.39oz(46T); 111grams or 3.92oz(48T); 133grams or 4.69oz(50T); 151grams or 5.33oz(52T); 169grams or 5.69oz(54T); 188grams or 6.63oz(56T).