... spacing: 26.5x26.5mm10. Hole size: 5.5mm11. Applications: industrial, supermarket, display racks, general usage in market, etc. More ... National standard GB/T14687-93 and GB/T14688-93 for industrial caster in 1993 and 2011. 2) Our company ... plating, machine assembling and capability tests for furniture caster, instrumental caster, industrial caster, heavy-duty industrial caster, medical casters. 3) We ...