1. Screw stem caster 2. Locking nylon wheel caster 3. White PP and Nylon wheel are offered 4. Zinc plated steel housing Caster Parameter: Model numberL190 ... plating, machine assembling and capability tests for furniture caster, instrumental caster, industrial caster, heavy-duty industrial caster, medical casters.3) We have our own ... let us know, we could make it customized for you. Screw Stem Caster