The copper tube flaring tools are made of steel material, which have the characteristics of high hardness and resistance. They are widely used for forging and flaring of . Easy to use and . They are suitable for the maintenance and use of refrigeration equipment such as refrigerators, freezers and air conditioners. Features - Color: Black. - Material: Bearing steel. - Size: About 6.20X2.20X2.50cm/2.44X0.86X0.98inch. - With these practical tools, the copper tube can be easily expanded, accurately positioned. - materials make the copper expander stronger and longer life. - Accurate positioning, ready to use with a hand electric drill (not included). - These copper expanders are small, portable, and do not take up space. - They are widely used in the maintenance of refrigeration equipment such as refrigerators, air conditioners and freezers. Package list: 5 x Bearing Steel Drill Bit Expanders