Product name:TFE-A1803 TFE-A1804 40mm Rubber Wheel Swivel Ball Caster Material:Rubber TPR PP Color:Bronze, chrome plate, galvanized Size:1.5 2 inch Diamteter:40 50mm Wheel height:56 65mm Bolt size:M8 M10*15mm Top flat size:38mm Top flat hole distance:26mm Load Capacity:20-35kg per piece