[Size] - Wheel Dia: 40mm / 1.5 Inch; Capacity: 20kg / 44lb per wheel [Mounting Size] - Mounting Hole Diameter: 5mm / 0.20 Inch; Hole Center Distance: 36mm x 15mm / 1.42 Inch x 0.59 Inch [Material] - The caster wheel is made of polypropylene, it rolls…