Specifications: V Grooved Wheel 4” x 4” x 1.75” (98.3 x 98.3 x 45.5mm), Heavy Duty 3000 LB Load Capacity. ½” (12.1mm) Bore Diameter, 2” (50.8mm) Hub Length – Weldable Box 5” x 3.12” x 2.25” (127 x 79.4 x 57.15mm) ½” Bore Diameter Sidco Supply Solid Black Zinc Plated V-Groove Gate Wheel is 4" x 1.75" and offers a 3000lbs load capacity. Our gate wheel is engineered from solid steel that is precision machined providing exceptionally low rolling resistance, outstanding wear resistance, and extremely high static and dynamic load capacity. This heavy-duty wheel can be used in many applications and is very popular for automatic gates, driveway gate wheels, gate wheels for metal, and is a popular alternative solid rolling gate wheel opposed to cast iron wheel casters, roller casters and cast-iron casters.