IWISS HVAC Installation Multi-Size Copper Tube Swaging Expander Tool Kits Set Expansion heads from 1/4" to 1-1/8" with Protable Case Expander heads 8 sizes:1/4",3/8",1/2",5/8",3/4",7/8",1"&1-1/8" O.D. Each head has 6 guide channles and rivets to assure regular capillary flow Special Expander Head :1/4" Forged aluminum material promises the tool a solid and light body. Tool Weight :1kg