The source lists the lock or brake configuration as Top Lock Brake
Key listed details include model 894500
fully-ported swivel provides unrestricted flow
Key source specifications include Model 602138
5" x 1-1/4" Duralastomer Threaded Swivel Stem Caster, Brake (1/2"), 350 lb. Cap Size:1/2" x 2-3/4" Stem The source lists the lockProduct Overview The Duralastomer wheel is corrosion resistant, making it a great choice for applications that are frequently washed down. Tread & Core: Solid Cast Polyurethane Elastomer, Non Marking This caster is listed with wheel diameter 5", tread width 1 1 4", load capacity 350 Lbs., tread type Solid Cast Polyurethane Elastomer, Non Marking, and bearing type Sleeve Bearing. Before ordering, verify the listed wheel dimensions, load capacity, bore