Wheels Manufacturing T47A Outboard ABEC-3 Bearings For 29mm Cranks (SRAM DUB) The Wheels Manufacturing T47A Outboard ABEC-3 Bearings For 29mm Cranks (SRAM DUB) are designed for T47A frames and cranks with a 29mm spindle diameter. These bottom bracket cups are perfect for those looking to enhance their bike's performance. Asymmetrical T47A threaded bottom bracket cups suitable for T47A frames and 29mm spindle cranks Internal bearings fit bottom bracket shells with widths ranging from 77.5mm to 79mm Crafted from machined aluminium, these cups thread directly into Cervelo, Factor, and Felt T47A bottom bracket shells Equipped with ABEC-3 grade bearings that are easy to service or replace Includes a protective sleeve to shield against dirt and grime, while preventing internal wires and hoses from rubbing on the crank spindle Similar to standard BSA threaded cups, with a left-hand thread on the drive side and a right-hand thread on the non-drive side Use quality grease for installation in steel or aluminium BB shells, and an anti-seize compound for titanium shells The Wheels Manufacturing T47A Outboard ABEC-3 Bearings For 29mm Cranks (SRAM DUB) offer a reliable solution for cyclists seeking durable and easy-to-maintain bottom bracket cups.