Features:-The hammer has a high-strength steel handle with a rubber sleeve to absorb vibrations.-The pull rod is made of thickened high-strength manganese steel, designed to avoid damage and scratches to the floor during installation. -The impact block is made of high-quality PC solid plastic to support high-intensity floor installation tasks. Suitable for 0.27" (7mm) - 0.6" (15mm) laminate or hardwood floors.-Equipped with 40 wedge-shaped shims to facilitate laying large floor surfaces. The shims have a "serrated" edge that locks them into place, and the shims can be stacked and offset to create different thicknesses.-A pair of foam knee pads are provided to provide support and protection for your knees, making your work easier.Spec.