Due to its traditional quality, Unior is popular with both professional and amateur craftsmen. 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. Unior hand tools finish many jobs faster and make working in tight areas easier. They are adapted to work on the latest bicycle models. - Unior professional quality tools are European made and carry a lifetime warranty - Compatible with Unior headset press - Interface diameters of 1", 1-1/8", 1-1/4 " and 1-1/2"