This is a set sale for one Mini 4WD car (8 rollers). Rollers only, the machine is not included. Item No: 95423 Mini 4WD Special Project (Parts) Lightweight 2-Stage Aluminum Roller Set (13-12mm) (Red) [Parts useful for machine setting and performance improvement] This is a lightweight type of the popular 2-stage aluminum roller, which is often used in official races. The aluminum roller part has been lightened by 20%. The 2-stage aluminum roller supports the machine with the upper roller when the machine tilts in a corner, enabling stable cornering. The aluminum roller has a red anodized finish. It is also effective for dressing up the machine. A 520 bearing, brass spacer, and screws and nuts for installation are also included. [Basic Specifications] Integrated 2-stage aluminum roller, with 4 520 bearings Item No: 95549 Mini 4WD Special Project (Parts) Lightweight 13mm All-Aluminum Bearing Roller (Red) [Parts useful for improving machine performance and setting] This is a lightweight type of the popular 13mm all-aluminum bearing roller used in races. By making 10 holes and changing the shape, the aluminum part has been lightened by 30%. The smooth rotation with embedded 520 bearings is also attractive. Red color that makes it fun to coordinate with the body and chassis. In addition to 2 bearing rollers, screws and aluminum spacers for installation are also included. [Basic Specifications] In addition to 2 red anodized aluminum bearing rollers, 2 2x8mm screws and 4 roller spacers for installation are also included. #Mini4WD #2StageAluminum #Lightweight2StageAluminumRollerRed