Features 1、5 PIECES SET: This flaring tool drill bit kit has 5 different sizes, which will meet your various work needs and make it simpler. 2、PRACTICAL USE: When installing the air conditioner, open the copper pipe and connect the two copper pipes to each other. 3、HEX SHANK: The 1/4in shank suits for universal hand and electric drill, and the hex design also guarantees firm connection. 4、GOOD MATERIAL: Forged with chromium molybdenum steel, not easy to rust and wear resistant, very durable for long use. 5、EASY CARRYING: Compact size together with light weight largely simplifies the carrying as well as the storage. Specification Item Type: Swagging Tool Material: Chrome Molybdenum Steel Colour: Black Hex Handle Diameter: Approx. 6.35mm / 0.3in Specifications: 3/4in, 5/8in, 1/2in, 3/8in, 1/4in. Purpose: Copper tube flaring tool. Package List 5 x Swagging Tool Drill Bit