1. tube benders, tools for refrigeration and air conditioning 2. for tube 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 7 ... ~22mm) tube benders, tools for refrigeration and air conditioningincludes CT-999R, CT-312, CT-209, for tube 1/4, 5/16, 3/8 ... feel free to contact us for more information. Tube Benders, tools kit, for refrigeration and air conditioning systems