Features: Hands-free nailed hardwood flooring for use with any floor thickness. Make it easier to install hardwood floors without damaging the floor. By placing the curved planks in the position of the nails. Equipped with steel jack, hard gear, spring loaded ratchet mechanism for locking. Can be used as a push-pull design to push or pull the floor strip into place. Specification: Color:Golden Material:Carbon Steel Rack Length:12-5/8in Rack Width:1in Rack Height:5/8in Rack Plate Length:1-7/8in Rack Plate Width:4-5/8in Rack Plate Thickness:1-1/2in Lifting Plate Width:2in Lifting Plate Length:9-1/16in Lifting Plate Thickness:1/4in T Gear Diameter:1in Gear Shaft Nut Thread:3/8in x 24Npt 12 Tooth Package List: 1 x Flooring Jack Users Manual: The jack is located on the edge of the floor and can withstand wall or wall studs. Use the lever handle to bring the panel closer to the fixed surface. If you can't find the stud position, you can use a plate that is long enough to span the stud distance to resist and prevent you from crossing the drywall. Continue the ratchet until the tool floor grips to pull the floor to the desired position. When you nail the floor strip, you can leave the jack in place. To loosen the jack, simply push the handle to the front position and pull the jack base. When not close to a wall or cabinet, you can use the jack in the middle of the floor by screwing the scrap board to the subfloor and using the jack at that location. At the toe of the cabinet, the jacks can be used to tighten the plates and secure them in place for hands-free nailing.