Bostitch 2-in-1 Hardwood Flooring Jack Makes it quick and easy to "true up" warped flooring material, Holds boards in places so that they can be securely fastened while straight, Soft, non-marring base prevents damage to pre-finished flooring material, Handle angles out slightly to make it easier to engage and release close to walls, Comfortable handle features rubber over-molding for added control, Pre-drilled holes make it quick and easy to attach jack to sub-flooring prior to engaging.