Our lightweight chain guide is designed to be used with our ibr chainringbash 34simple practical and lightweight34key features lightweight 1x chain guide for xc trail am and enduro designed for optimum use with our ibr chainring low or high seat tube fitting iscg iscg05 and bottom bracket mounted versions available accommodates chainring sizes from 32t to 36t simple to fit low maintenance and lightweight finger chain guide tech specs gt simple design uses an aluminium