... our casters: 1. high quality and reasonable price. 2.Smoothing running, unique design 3.Low noise design, good ... 4.anti-friction, good impact resistance, high load bearing. 5.payment: after 30% T/T, advance delivery. 6. ... 85 154 50-90Configuration screw way M8-M12, 5/16-1/2. Stem way Diameter 8-18. The connection ... used the installation size of this series. 2.5" Transparent caster for baby trolley