R8 Collet & Tool Tray ~ This convenient tray will cut down set up and tool changing time. ~ Operator can work in a more organized manner. ~ Easy to install, drill and tap two holes in the base casting 1″ below the degree ring. This convenient tray will cut down set up and tool changing time. Operator can work in a more organized manner. Easy to install, drill and tap two holes in the base casting 1″ below the degree ring.