High Quality: Made of 45# steel, long service life, high hardness, not easy to deformation.It has been wrought by fine work and is more resistant to impact and wear than ordinary steel.If you want to change your brake pads, this is a must.Easy to Operate: The retracting tool for the rear brake pads of the car is easy to use, and the retracting piston is available on the left and right screw piston calipers, so you can operate it easily.It made things quick, easy and painless.Size: Screw size is 5.4*3.7in, top piece size is 3.5*1.8in, please confirm the size before purchase.If you just started using it, it's a bit time consuming, please don't rush it.Practical and Efficient: Brake caliper piston winding tool, used to install brake pads of domestic and imported cars and trucks with return air piston calipers.Applicable: This handle set brake caliper winding tool is ideal for removing or installing press fittings such as ball joints, universal joints, automotive brake fixing pins, etc.