Complete replacement handslide assembly for King model 2B jazz tenor trombones (model 2102). Dual bore (0.481/0.491 inch bore) with nickel silver outer slide tubes. Original OEM item made by King at the Eastlake, Ohio plant. Fits all King 2B and 2102 models current and older, dating back to the 1950's, except possibly very early prototype models and others that have been modified to accept different slides. Not intended for 2B+ or 2102PL models.