Check the listing for details. 5306-2RS, 3306-2RS Double Row Angular Contact Ball Bearing 30x72x30.3mm (Qty 1). Width: 30.30 MILLIMETERS, Condition: New, Made in CN. Listed at 27.95 USD. Double row angular contact ball bearings with seals or shields are designed as a compact alternative to a back-to-back pair of single-row angular contact ball bearings, requiring less axial space. These bearings offer high-speed capability, depending on the sealing configuration, and are capable of supporting relatively high radial loads and large axial forces in both directions. They effectively accommodate tilting moments, making them suitable for applications that require a stiff bearing arrangement. With a space-saving design, they provide an efficient solution where axial space is limited, and the integral sealing system helps extend bearing service life by protecting internal components.