Set of 2 WAASOSCON Heavy Duty 600lbs Gate Caster, 8.0 Inch Spring-Loaded Shock Absorbing Wheel, 360° Rotating Industrial Grade Gate Roller for Metal/Wood Gates

1. Industrial Shock Absorption: Triple-coil spring + 70A durometer polyurethane wheel reduces structural stress by 47% compared to standard casters (tested with 200,000 open/close cycles). 2. All-Weather Durability: Polymer compound maintains -40°F to 250°F flexibility (UL 746C certified) with 0.68μ wet surfaces friction coefficient for snow/mud conditions. 3. Precision Bearing System: Double-row angular contact bearings (ISO 492:2014 Class 3) withstand 1,200lbs radial load + 440lbs axial load simultaneously. 4. Universalis Mounting Design: 2.36x3.94 Inch slotted bracket accommodates 1.18-2.36 Inch gate posts; includes M10/M12 adapters for global hardware standards. 5. Anti-Corrosion Protection: 8-stage zinc-nickel electroplating (MIL-STD-171-72 compliant) + powder coating resists salt spray 1,500hrs (ASTM B117).