C-Mart K0031 copper tube set is a very familiar set to repair and maintenance workers in the refrigeration industry because this tool set helps workers a lot in installing and repairing equipment such as: air conditioner, refrigerator… C-Mart K0031 copper tube set is suitable for many different copper tube sizes from 1/8" to 3/4. C-Mart K0031 is made of CR-V steel, has high hardness, good force resistance, and is covered with a high-quality anti-rust coating. The details of C-Mart K0031 are designed very meticulously, ensuring accuracy and not deforming the copper tube.