ROLAMENTOS 12X21X5mm (4UND) REVOLUTION DESIGN

The Revolution Design Ultra Bearings (12x21x5mm, 4pcs) are high-quality ball bearings that feature both a metal and a rubber seal. This unique combination ensures excellent low-friction performance while providing outstanding durability against dirt. They are available in many sizes and offer excellent quality at a fair price.

Product Features:

High-quality ball bearings with metal and plastic seal

Excellent low-friction performance and outstanding durability against dirt

Inner diameter: 12mm

Outer diameter: 21mm

Width: 5mm

Available in many sizes

Excellent quality at a fair price