This hydraulic tubing bender kit is designed for bending copper and aluminum tubes from 1/4" to 7/8" for HVAC, refrigeration, auto repair, and maintenance work. It uses a built-in hydraulic system for smooth, labor-saving operation and supports precise bends up to 90 degrees. The kit includes 7 bending dies to handle a range of common tubing sizes. Its aluminum alloy dies are built for durability and corrosion resistance. This tool is suited for both professional technicians and serious DIY users.