For easy, precise, blemish free flaring of copper, soft steel, and aluminum outside diameters 1/8″, 3/16″, 1/4″, 5/16″, 3/8″, 1/2″, 5/8″ and 3/4″. Exact tube insertion height is controlled automatically resulting in perfect 37 degree burnished flares every time. Replacement cone #642700.