Ultra-high-quality Carbon steel casting
The aluminum track with materials, American Style Carbon Steel Roller Hanger, matte black finish prevent the kit from scratching. Rail thickness 0.24 inches, provide super load-bearing capacity, maximum weight capacity: 330 lbs.
Ultra-durable, high-quality Nylon Pulley
Premium nylon roller wheel is tested beyond 120,000 rolls, Gcr15 roller bearing, industrial grade track, Sporting a high temperature-treated surface coated with black powder for added durability, enable to use for years, providing a quiet and smooth sliding experience.