Strict selection: fine grinding process, and fast, easy to cut. Non-slip handle: conforms to engineering design, comfortable grip, non-slip and wear resistant, suitable for long hours of work. Easy to use: easy to store when not in use, easy to carry. edge: the overall heat treatment of the blade, high hardness, high strength and strong shearing force. The pipe is processed by a special process, the clamping effect is the best, and the copper tube is deformed little.Expanded pipe diameter range (mm): 3-19mm Model: 8pc tube expander Material: cast steel Expanded pipe diameter range ("): 3-19mm