[Size] - Wheel Dia: 41mm / 1.5 Inch; Capacity: 15kg / 33LBS per wheel [Mounting Size] - Mounting Hole Diameter: 6mm x 7mm / 0.24 Inch x 0.28 Inch; Hole Center Distance: 25mm x 25mm / 0.98 Inch x 0.98 Inch [Material] - The caster wheel is made of plastic,…