This multi stepped 1/2" male square drive wrench is used for radiator valve nipples, counter-threads and short tap extensions.

Stepped design, hardened chrome plated CR-V steel for internal hexagon and double hexagon cam fittings and slotted nipples.

  • Sizes: 3/8", 1/2", 3/4" and 1" as well as intermediate sizes.
  • Length: 4.1/8" (105mm).