1-3/8" O.D. x 18 gauge aluminum roller with 1/4" round steel spring retained shaft and light oil bearings.
Construction:
Tube: 1-3/8" O.D. x 18 ga. aluminum
Axle: 1/4" diameter steel
Bearing: Commercial Light oil, swaged
Axle Retention: Spring retained
Weight: .16 + (.04 x BF)
Shaft Length: BF+7/8"