characteristic Cutting range: 3-19mm, cutting thickness: less than 1 mm. High-quality steel forging, super hardness and simple operation Metric specification, simple pipe cutting and pipe expanding, suitable for daily maintenance and repair of air conditioners and refrigerators. A single clamping screw can easily clamp and remove the tubing; the feed screw handle is easy to rotate and easy to operate. With rugged installation. Produces a rolling effect of a uniform flare wall without causing wear in the pipe. describe Name: copper tube expander set Metric specifications: 3, 5, 6, 8, 10, 12, 14, 15, 16 and 19 mm. Material: steel+plastic Color: silver+red Quantity: 7pcs/set Package Contents: 1 x Copper tube expander set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.