ABS Plastic Materials<br />Outer Diameter: 52 mm<br />Width: 26mm<br />Quantity: 4pcs<br />tires not include<br />Hexagonal joints: 12 mm<br />Made in China<br />Color as photo shown<br />Offset 3mm<br /><br />                                                                                                                                Dimensions: 2.05 in x 2.05 in x 1.02 in (5.2 cm x 5.2 cm x 2.6 cm)<br />Weight: 1.41 oz (40 g)<br /><br />