These covered bearings have a smooth urethane surface that is cast directly to a precision sealed ball bearing. They provide smooth, quiet and non-marring operation. The urethane provides excellent abrasion resistance and durability. They are available in 35, 60 and 95 durometer
Width Roller: .196 in.
Length Thread to Roller: .12 in.
Number Bearing: R3-2RS
Durometer : 35 Shore A.