This squeaky floor repair kit helps repair gaps between subfloors. When the floor is pulled back into the joists, the aluminum blocks add support and the floor not squeak. The aluminum block adopts double-hole design, which can put 2 nails in it. It is sturdy and can effectively eliminate squeaks sound. The eliminate floor squeak screws kit is easy to install without drilling. Just use the high strength nails and screws to fix in place and screw it into the block with a drill bit. The installation needs only 2 steps. First you need to the floorboard squeaking position and the use the fasteners to secure the floorboards. After these 2 steps and you floor no longer squeak. Our squeaky floor repair kit is suitable for 2 types of floor joists, including standard wood and new I-joist. It is suitable for 5/8 inch or any thicker floors. Detailed description: Product Name: Squeaky Floor Repair Kit Size: Aluminum Block: 0.77 x 2.23 x 1.4 inch Long Screw: 2.72 inch Short Screw: 1.17 inch Nail: