They are fresh, tapered variants regarding the smooth-spinning ball bearing rollers from Item 15464 JR HG Alum Ball-Race Rollers 19mm (Ringless). Tapering them encourages the automobile to help keep in regards to the system when it mounts the walls, using the basis for increasing your battle summary expense!
• Tapered Aluminum Ball-Race Rollers (Ringless) x2
• Built-in 520 ball bearings give smooth rotation.
• Screws and spacers for use in accessory are included.