HOD HEALTH AND HOME Australia has been operating online and instore for 8 years. All products come with a 1 year warranty, fast shipping and special offers added to our site daily.. Twelve Heavy-Duty Garage Door Rollers From Randy Travis Machinery Are Made With 13 Sealed Ball Bearings To Create Less Friction Allowing Your Garage Door To Open Easily. Each Roller Is Constructed With A Lubrication Groove Which Dispenses Lubrication Over The Long Term. This Means You Won't Have To Lubricate Them As Much Or As Often As Other Garage Door Rollers. Manufactured In The Standard 2-Inch Size Most Garage Doors Use These Rollers Will Work With 99 Percent Of Garage Doors. With 13 Ball Bearings And Continuous Lubrication The Noise Your Garage Door Makes When You Open And Shut It Should Be 75 Percent Less. The Rollers Are Sealed Meaning That Dirt Won't Get Into The Bearings Giving These Rollers Longer Life. The Rollers Are Pressed Together Instead Of Peened So There Is Less Play—And Less Wear. Tested To Hold Up Under 25000 Cycles On A 1400-Pound Door These Rollers Won't Need To Take Nearly That Kind Of Beating At Your Home Since Most Garage Doors Weigh Less Than 300 Pounds. Order Yours Today And Enjoy A Quieter Garage Door With Rollers That Last. Specifications: Quantity: 12 Ball Bearings: 13 Material: Nylon (Wheel) Steel (Shaft) Other Ingredients: Lubricant Size: 105.5Mm Overall Shaft Size: 100Mm Shaft Thickness: 11Mm Wheel Thickness:12Mm Wheel Diameter: 46Mm Rating: 125 Lbs Per Roller Note: Installation By Professional Garage Door Installer Only