Thank you for viewing. *If purchasing multiple items, we will combine them. Please comment before purchasing.* We will discount 100 yen for each additional item to cover shipping costs. This is a set of 2 x 2 (4 total) blue 13mm lightweight aluminum bearing rollers for Mini 4WD. Other colors (red, blue, light blue, green, black, purple, pink, silver, gold, gray) are also available, so please comment if you need them. Brand new, unused. Please note that these are aftermarket parts. We have multiple items in stock, so please comment if you need more than one set. 1 set (2 pieces): 500 yen Shipping: 100 yen *Shipping is a flat rate of 100 yen even when purchasing multiple items!* Mini 4WD Tamiya TAMIYA Tamiya Aluminum Bearing