The BBB T-Rex Grip Cassette Removal Pliers are designed for effortless cassette removal, accommodating sprockets ranging from 11 to 26 teeth and compatible with 7 to 12-speed systems. Featuring a spring mechanism, these pliers securely lock the sprocket in place, preventing slippage during use. The design prioritizes safety, protecting both the sprocket from deformation and your hands from injury. With a Kraton handle, the pliers provide a comfortable and firm grip, making cassette maintenance a breeze.