Feature: Made of high hardness steel, wear resistance, not easy to deform. Small, easy to carry, easy to carry when going out, such as outdoor installation of air conditioning equipment. Application range: 1/4",5/16",3/8",1/2",5/8". Uses: used to expand the copper tube, make the copper tube swell, easy to connect. Can be used in air conditioning equipment, refrigeration equipment, automotive air conditioning, etc. Specification:Material: steelType: CT-193Application range: CT-193: 1/4",5/16",3/8",1/2",5/8"Package list:5 * Swaging Punch ToolNote:The actual product color may deviate from the photo due to light.There may be a slight deviation in the measurement of product.