... and easy Features: 1) CT-300: hydraulic expanding tool kits2) CT-300A expander heads 3/8, 1/2, 5/8, 3/4, 7 ... /8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2" with CT-107 ... tube cutter and CT-208 reamer3) CT-300M metric, expander heads 10, 12, 16 ... , 32, 35, 38mm with CT-107 tube cutter and CT-208 reamer4)CT-300A-L:3/8"~1-5/8"5)CT-300M-L:10~42MM ...