The Enduro 63801 2RS ABEC-3 Radial Bearing (C3) HUB - 12 x 21 x 7mm is a versatile, extra-wide bearing designed for hub applications and pivot use where robust protection and smooth rotation matter. It features deep-groove races, Grade 10 balls, dual-lip seals, and high-pressure grease to endure daily use and the elements. Available in several material options, it balances performance and reliability with a full labyrinth seal to keep dirt and moisture out.