OTC (7307) Adjustable Hook Spanner Wrench Replaces many fixed-size wrenches needed to service industrial tractors and other equipment Its drop-forged jaws adjust to 11 positions for a capacity of 4-3/4 inches to 12-3/4 inches OD Handle is 24 inches long and 1 inch in diameter Spanner wrench with one 3/8 inch thick jaw