Shimano M70CT4 Severe Condition V-Brake ShoeThe Shimano M70CT4 Shoe will replace your worn and beat up XT, XTR, or LX cartridges or shave some weight off your current V-brake system. Designed to perform excellently in wet conditions, these cartridges are more abrasive than most and as such are suggested for use with machined sidewall rims only.689228075290