Ultra-Quiet 2 Nylon Garage Door Roller with 13-Ball Bearing & 4 Stem by Durabilt

Description

QUIET OPERATION: smooth 13-ball bearing reduces rotational friction between roller and shaft;EXTRA QUIET ROLLERS: ball bearing nylon roller wheels are much quieter than original equipment garage rollers;EXTRA LUBRICATION: groove on roller to disperse grease over extended period;STANDARD SHAFT SIZE: 4-5/8 long shaft, 7/16 thick shaft;STANDARD WHEEL SIZE: 1/2 shoulder, 1/2 thickness, 1-13/16 diameter