[15418] Double Aluminum Rollers with Rubber Rings (13-12 mm)

● The top roller of the 2-stage aluminum roller (13-12 mm), which is often used in races, is now 12 mm with the rubber ring attached.

When the is tilted, the upper 12 mm roller comes into contact with the fence.

Not only does it work as a stabilizer to prevent tipping over, but the rubber ring also creates a braking effect to further improve running stability.