Metal Ball Casters For Sale Roller Ball Transfer Bearing Casters - 1 Inch M8 Ball Transfer Unit For Flange Mounted Ball Casters Dimension: ball diameter is 5/8 inch. Ball Caster Roller Transfer Bearing - Conveyor Ball Transfer Appliance Caster Transmission 5/8 Inch M8,Thread Stem,Metal Industrial Bearing Steel & Carbon Steel,528 Lbs Total Load Capacity,Set of 6: : Industrial & Scientific About this item Material: mail ball is bearing steel, shell is carbon steel. Dimension Load Capacity:90 lbs per unit, max. Snapklik.co : 20 PCS 5/8 Roller Ball Transfer Bearing, CY-15H Carbon... Material: mail ball is bearing stell, shell is carbon steel. Ball Transfer Bearing Unit Casters Conveyor Roller M5 M6 M8 M10 Male load capacity is 110 lbs per unit., Net Weight: 0., 19 lbs per unit