Craftsman 45 Degree Double Flaring Tool Ball thrust bearing in the flare cone minimizes friction, making operation easier and the bar provides a positive grip on the tubing Recommended for Bundy and other annealed soft steel tubing (wall thickness up to 0.035"""") Made of steel yoke and swivel type hardened steel chrome finish flaring cone Also makes single or double flares in soft copper or aluminum tubing For 3/16, 1/84"""" 5/16"""", 3/8"""" and 1/2"""" o.d. tubing