ganopper 30t chainring 104 bcd narrow wide teeth single chainring crank set rings for 9 10 11 speed bike parts (30t) ganopper ganopper 104bcd narrow wide chainring, for 9/10/11 speed cranks <br><br> specifications:<br><br> material: machined 7075 t6 aluminum<br><br> finish: electroplated finishes<br><br> color: electroplating colour <br><br> range: 30t,32t,34t,36t,38t<br><br> shape:round<br><br> compatibility: 9/10/11 speed<br><br> size/bcd: 104bcd<br><br> weight: 31g(30t),42g(32t) 53g(34t) 59g(36t),74g(38t)<br><br> package included:<br><br> 1*104bcd narrow wide chainring<br><br> feature:<br><br> 1.the new narrow-wide teeth design increases chain retention, wear life, and reduces friction and noise.<br><br> 2.larger wide tooth design provides maximum ring durability and drop performance<br><br> 3.super durable and light weight<br><br> 4.excellent fit and great value<br><br> 5.easy to install and fits perfectly the 104mm bolt pattern<br><br> one year warranty and 100% money back guarantee.<br><br> installation notes: :<br><br> 1.this chainring's bcd(bolt circle diameter) is 104mm. <br><br>before submiting the purchasement, please make sure that your crankset's bcd is 104mm,otherwise they won't fit.<br><br> 2.most of the cranksets from shimano and sram will fit. for cranksets from other brands, please check on the diameter first.<br><br> 3. 30t rings have integrated shims and chainring bolt threads to allow the smallest ring size possible on a 104 pcd crank.<br><br>