The Rothenberger Universal Uni-Spanner is a versatile tool designed for installing and removing heating nipples, tank connections, and short tap extensions. Its unique stepped key design effectively prevents canting of nipples and screw connections, ensuring a secure grip. This kit is suitable for a wide range of applications, including cam, international hexagonal, and 12-edged drivers, with sizes 3/8, 1/2, 3/4, and 1 inch, as well as other intermediate sizes. The 1/2" square drive ratchet is made from durable, nickel-plated chrome-vanadium steel for longevity.