Service Caster #20 Series grip ring inside mount swivel casters with 4 inch phenolic wheels and posi lock are a versatile caster choice. Featuring a zinc plated finish and double heat treated ball bearing raceways, these casters are ideal for light and medium duty racks, carts, equipment, and shop projects.
Wheel size: 4" x 1-1/4"
Wheel hardness: 70-80 Shore D Durometer
Grip Ring Stem Size: 7/16" diameter x 1-3/8" length
Mounting height: 5-1/8"
300 pound capacity per caster Wheel rotates on roller bearing (Use for manual speeds; 3 mph.)