General description The 10pcs 3CM Dia Carbon Steel CY-15A Ball Transfer Unit is designed for efficient ball transmission in various applications. Featuring a 360-degree swivel plate and a dual wheel roller system, this unit is ideal for both industrial and non-industrial uses, such as retail displays and airport baggage transfers. The hardened and plated ball support cup, along with a protective cover, ensures low torque and a long service life, making it a reliable choice for replacing broken units, including those on office chairs. Technical specifications Model Number: -15A Type: Window Rollers Treatment: Zinc Plating Length: 50mm Width: 30mm Height: 2mm Hole Pitch: 40mm Mounting Hole Distance: 4mm Ball Diameter: 15.875mm (5/8 inch) Single Load: 10kg (Max. 20kg) Single Weight: 43g Color: Silver Material: Steel Other information Package Contents: 20 * Ball Transfer Unit Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from