ethirteen LG1 Chain Guide 32-38T ISCG-05 with Bashguard Black Features new Tech-3 stealth idler Adjustable angle, direct-mount bashguard accommodates all chainstay designs Design does not require wearplate removal for changing chains or chainrings; captive alloy hardware throughout - eliminates potential for loss during adjustments Wearplates feature chainring size indicator marks for simple position adjustments e*thirteen Chain Retention Systems for downhill and 4X race as well as bike park & freeride