- Used to pull bearings that you can't reach from the rear side - Includes 8, 10, 12, 15, 17, 20, 25, 30, and 35 mm collets - Collets are precision machined for perfect fit and durable performance - Collets have a innovative new design that improves durability and pulling strength - Pull tests in our lab show our collets are 2x to 3x stronger than conventional collets - Kit includes high quality slide hammer with excellent weight and balance