10 Pack 2” Ultra-Quiet Nylon Garage Door Rollers 4” Stem, 6200-2RS Double Seals
6200ZZ Bearing, Isolation of more than 99% dust, and running more than 100000 cycles. —Professional garage door opener and hardware producer over 20 years. High-quality reinforced nylon can effectively extend the service life of garage door rollers over 100,000 operations.