The set includes 2 x mini pipe benders, specifically designed for brake pipe. For use on copper & cupro-nickel brake pipe measuring 4.75 to 6mm (3/16"- 1/4") in diameter. Set also includes 2 x pairs of brake pipe clamps to help when forming & working brake pipe, for use with a standard 6mm hex key or a 1/4"D ratchet (not included). Use in conjunction with other Laser brake tools including Part Nos. 8520 (Brake Pipe Reamer), 7624 (Mini Ratcheting Brake Pipe Cutter) & 6728 (Brake Pipe Flaring Tool).