[Size] - Wheel Dia: 50mm / 2 Inch; Capacity: 20kg / 40lb per wheel [Mounting Size] - Mounting Hole Diameter: 6mm / 0.24 Inch; Hole Center Distance: 45mm x 25mm / 1.77 Inch x 1 Inch [Material] - The caster wheel is made of polypropylene, it rolls smoothly…