Features a 360 degree swivel mounting plate attached to a double wheel roller system.Two-Hole, metal and Flange-mounted ball bearing resting on individual support bearings and is perfect for most industrial transfer applications.Ball transfer unit can also be used in a variety of non-industrial applications, including retail store displays and airport luggage transfers.Ball support cup is hardened and plated, protective cover assures low torque and longevity.Ball Transfer Unit is perfect repment for your broken one on your office chair.Specifications:Surface treatment : Zinc PlatingModel : CY-15ALength : 50mmWidth : 32mmMounting Hole Pitch : 40mmFixing Hole Distance : 4mmSingle Load : 10kg (Max. 15kg)Colour: silverMaterial: carbon steelSize: Ball diameter: 5/8 inches, about 15.8mm, height: 21mmPackage Contents:5 x Roller Ball Transfer BearingsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.About UsWe provide the good product with the best price,we support Wholesale/Drop Shipping Order1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.About Shipments1.We will send out the orders ASAP once your payment is completed normally.2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.About After-sale ServiceWe are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.About Feedback1. Please check the package and item when you get carefully to make sure there is no problem.2. If you have any problem or are not entirely satisfied with your package,please don';t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.3. If there is no problem, please leave us five star positive feedback.Your affirmation is our greatest motivation ! !We confidently assure you'll be satisfied with what you get.However, If there's a chance that you are not satisfied with our goods or something else, please let us know before leaving us a Negative feedback. We will try our best for 100% customer satisfaction. Your 5-Star Positive Feedback is much appreciated to us, and your satisfaction is our greatest motivation to move forward.Welcome to Shop Here! Want more Items? Please come & visit our SHOP.*Shipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 5 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer).Your satisfaction is our first priority.*If you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.