Feature●HEAVY DUTY 12 Gauge steel with 3 3/8" from center of bearing to where it mounts.●SEALED 1641-2RS ball bearing to reduce replacement frequency and maintenance cost●UPGRADED ball bearing provide superior quality and higher durability●UNIVERSAL fit for standard 7 and 8 garage door. 1" bore diameter bearing.●REPLACEMENT for worn out bearing, sold as pair (left & right)Description