... zinc plated, Top plate swivel housing ,with Precision double ball bearing, 5.8mm thickness pressed steel .4.Top ... iron,high-heat resistant material ,conductive wheel7.Applications: supermarket, display racks, handcart, transport vehicle ,general usage in market or ... *115mm85mm*72mm11mmPu on pp[Similar Products][Factory Display] H4 Heavy duty type double ball bearing swivel caster wheel