Rothenberger 26036 RoFlare Single Compact Flaring Tool, 3/16 to 5/8-Inch Hardened and polished flare cone: High quality flare sealing surface Multi block multi-clamping calipers: Firm, quick, off-center clamping of the tube and automatic self-centering tubes don't slip Mold available in metric and English measurements Special screw thread: Allows smooth, efficient deformation of material Made from high quality steel: Long-lasting