This is a door rail pulley made of steel material, with reasonable design and practical functions, which can well meet your needs. Made with excellent craftsmanship, it is flexible and practical, can slide smoothly, and can bring you more convenience. This is a very good and practical pulley, it will be your good choice of accessories. Features -Color: Silver. -Material: Steel. -Size: About 15.90X14.00X4.50cm/6.25X5.50X1.77inch. -Bearing weight: 500KG. -Made of steel material that is not easy to rust, it is durable and will not be easily . -It has a wide range of uses and is a good accessory for most furniture, wardrobes, closets, doors, etc. -It is made with craftsmanship and can slide smoothly, can use it with confidence. -Using high-speed bearings, sliding is very smooth, with excellent noise reduction effect. -The surface is smooth, polished technology, sliding freely, will be your good choice of accessories. Package list: 1 Track Roller