Size：The length of the m10 threaded bolts is 8.5cm/3.35in and the screws is 4.5cm/1.77in. The length of the m8 threaded bolts is 8cm/3.15in and the screws is 4cm/1.57in,you can buy and use with confidence. Package Included: Our cat scratching post replacement screw set includes 4pcs M10 bolts, 4pcs M8 bolts, 4pcs M10 screws, and 4pcs M8 screws. Additionally, we provide an allen wrench for easy installation of the screws. High-Quality Material: Our cat scratching post replacement screws made from durable and sturdy metal, rust free and corrosion resistant. Convenience: Our cat scratching post replacement screws set are specially designed for m10 and m8 cat scratching posts. With our screws, No need to hire a professional or struggle with complicated tools–our user-friendly design ensures that pet owners of all skill levels can easily replace the screws on their cat's post. Service: Thank you for supporting, please contact us if you have any questions with our products, we are very happy to help you. Please note that this product listing is for the Cat Scratching Post Replacement Screws Set only, and does not include the cat scratching post itself.< br > Material: Stainless steel< br > Size:< br > The length of the m10 threaded bolts is 8.5cm/3.35in. The diameter is 1cm/0.39in.< br > The length of the m8 threaded bolts is 8cm/3.15in. The diameter is 1cm/0.39in.< br > The length of m10 screws is 4.5cm/1.77in. The diameter is 1cm/0.39in.< br > The length of m8 screws is 4cm/1.57in. The diameter is 1cm/0.39in.< br > Package include:< br > 4 pcs m10 and 4pcs m8 threaded bolts< br > 4 pcs m10 and 4pcs m8 screws< br > 1 pcs allen wrench< br >