Wear-resistant nylonThis sliding door hardware is made of good quality nylon material, slides smoothly without getting stuck, has good toughness and stable structure. Up or Down OrientationThe sliding gate guide roller is easy to install and convenient to use, orientation can be up or down. For gates Sliding doorsSuitable for all kinds of sliding doors, universal and versatile, need to be installed with brackets, with simple application method, you can easily install and remove. For wall Rear post guide The sliding door guide post roller can be installed on the back post wall, has a stable structure and a long service life. Standard M12 thread The total length is 14cm, working length for 100mm, drum diameter is 48mm, comes with a f M12 thread.