The GR1 Performance Grip balances grip and hand irritation with a micro tile surface pattern. A low profile diameter maximizes control and handling. The single side lock-on reduces weight and makes installation easy. Features: Micro tile surface pattern balances grip and hand irritation Single side lock on Low profile 30mm diameter 135mm length 100g / pair Install using a standard 3mm hex wrench Materials: Kraton compound for tacky soft feel Aluminum clamp Care Instructions: Wipe clean with mild soap and water or bike wash. Do not use solvents.