By assuring alignment of dowel holes and pins, General Tools 840 Revolving Turret Doweling Kit helps create professional-quality edge-to-edge, right-angle and edge-to-surface joints that can be press-fit or glued. It is a precision jig that assures accurate line up of dowel holes in furniture and carpentry, 6 size precision doweling jig, rust resistant plated turret & parts & painted die cast body.