Features CONVENIENT AND EASY TO USE: Widely used as sliding track pulley, save space, easy to use, very practical RUSTPROOF TREATMENT: Galvanized technology is adopted to make the surface coating thicker, thus ensuring better rustproof performance of pulley STABLE AND LOW RESISTANCE: High accuracy bearing ball to ensure the stability of bearing rotation. The curved edge of the roller reduces the area of adhesion to the track and reduces drag WIDE APPLICATION: Can be used as an alternative to barn door rollers, sliding door rollers, or garage door wheels, warehouse slide wheels, etc. CORROSION RESISTANT STAINLESS STEEL: Stainless steel material track roller wheel possess corrosion resistance, good mechanical properties, high strength Specification: Item Type: Track Roller Wheel Material: Stainless steel Wheel Diameter: Approx. 38mm / 1.5in Total Length: Approx. 105mm / 4.13in Wheel Spacing: Approx. 40mm / 1.57in Screw Thread Type: M10 Package List: 1 x Track Roller Wheel Package List 1 x Track Roller Wheel