Designed to remove non-threaded bottom bracket bearings and cups A century of excellence for the next millennium Unior, the European hand tools producer, is a synonym for reliable, high-quality, and functionally designed hand tools around the world. Due to its traditional quality, the Unior trademark is popular with both professional and amateur craftsmen. - Safely drives the bearings out of the bottom bracket shell - Special Tool Steel is drop forged, hardened and tempered - European made and lifetime warranty