Wear-resistant nylon The sliding door hardware is made of high-quality nylon, which slides smoothly and does not jam, with good strength and stable structure. The direction can be up or down】The sliding door guide roller is easy to install, easy to use, the direction can be up or down. Suitable for sliding doors Suitable for all kinds of sliding doors, universal, no need to install a bracket, simple installation method, can be easily installed and removed. Suitable for the rear pillar wall The sliding door guide roller can be mounted on the rear pillar wall, with a stable structure and long service life. Standard M12 thread Total length 13.8cm, effective length 100mm, roller diameter 48mm with M12 thread. Package includes: 1 x guide roller universal for hard nylon sliding door (not included). Notes: 1: 1. This item size information is just for reference only, due to manual measurement, there may be an error of 1-2 inches. Thank you for your understanding. 2. Due to the difference