Have a cushioned rubber tread bonded to cast iron core. Wheels absorb shock and vibration and are quiet during use. Top plate made with 1/4 in cold forged steel. Wheel bearings are straight roller 3/4 in with spanner bushing. 4 x 4-1/2 in square plate.
Manufacturer: SHEPHERD Model Number: 9494 UPC: 039003094945
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