Artilife 12Pack 2 Nylon Garage Door Rollers Stamping Bearing Quiet and Durable 4 in Stem for 2 Garage Track Replacement Stamping Bearing

? Features: The rollers are made from nylon that is softer and quieter than plastic or metal rollers, which are quiet and will not shake your walls. The ball bearings on each roller reduce rotational friction. Each roller has a hardened steel 11-ball bearing encasement that is stronger than a standard bearing. Each garage door rollers can reuse 120,000 cycles. Used in Over 99% of All Garage Doors, Very quiet Good for All 7" Foot or 4 Panel (Sections) Residential and Light Commercial Doors Fits All 2" Track. ? Specifications: Bearing Type: Stamping Bearing Wheel Material: Nylon Wheel Diameter: 1.81 inch Shaft diameter: 0.44 inch Shaft length: 4 inch Total Length: 4.7 inch Single Load: 25kg ? Package Included: 12Pack 2" Nylon Garage Door Rollers