OTC 7307 Hook Spanner Wrench 

These pieces will replace many fixed-size wrenches needed to service industrial tractors and other equipment. Their drop-forged jaws adjust to 11 positions for a capacity of 4-3/4" to 12-3/4" O.D.

-Spanner wrench with one 3/8" thick jaw.

-Handle is 24" long and 1" in diameter.