[Size] - Wheel Dia: 40mm / 1.5 Inch; Capacity: 5kg / 11LBS per wheel [Mounting Size] - Mounting Hole Diameter: 4mm / 0.16 Inch; Hole Center Distance: 25mm x 25mm / 0.98 Inch x 0.98 Inch [Material] - The caster wheel is made of nylon, it rolls smoothly…