Instant purchase and silent purchase are welcome! ※The included bearings are not the same specifications as the separately sold single bearings. [60020-4 Special Sale Bearing Set for Single Rollers] ☝ Please copy and paste when purchasing multiple items. Details on discounts and tracking shipping are listed in my profile. Please feel free to comment if you have any questions ^^ #Special sale items and slightly damaged items are here! Boooon ☝ Tap to check out other great deals! #Other 19mm aluminum rollers are here! Boooon ☝ Tap to check out other products! #Other 13mm aluminum rollers are here! Boooon ☝ Tap to check out other products! #All rollers are here! Boooon ☝ Tap to check out other products! #All Mini 4WD products from Boooon are here ☝ Tap to check all products! ※Compatible with Tamiya products, but cannot be used in official races due to being aftermarket parts. Please use them for practice.