PRACTICS: Maintain the ductility of the copper pipe during the expansion process to avoid cracks and leaks., , APPLICATION: . Mainly used for expanding copper pipes to make two closely connected copper pipes when installing air conditioning systems., , MATERIAL: . Made of bearing steel with high yield strength and contact strength, which is not easy to deform even after long-term use., , HEXAGONAL HANDLE DESIGN: . It cannot easily fall off when attached to a hand tool, and the operation is safer., , FITS: There are a total of 6 different sizes of expanders, suitable for expanding different diameters of air conditioning copper pipes., , Specifications: 7/8 inch (approx. 22.2 mm/0.9 inch), 3/4 inch (approx. 19 mm/0.75 inch), 5/8 inch (approx. 15.9 mm/0.6 inch). ), 1/2 inch (approx. 12.7 mm/0.5 inch), 3/8 inch (approx. 9.5 mm/0.4 inch), 1/4 inch (approx. 6.3 mm/0.25 inch)., , Packing list: 6 x pipe stretchers,