Suitable for: Fast and simple operation.Not just for professional riders and mechanics, but for the everyday rider as well. Time Saver: This piston puller repair caliper is an essential tool to have for anyone working on their own machine,You no longer need to make tremendous force to remove the chain pins of your bike. Easy to carry: Light weight, it's the perfect take-along universal brake picton removal pliers Operate: Clamp screw allows pliers to be fixed into cup of piston for added pulling powerExtract seized brake caliper pistons without risk of damage to outer face of piston. Easy to Use: The fixing screw fixes the clamp in the piston cup to increase the pulling force.