Crafted from drop forged steel, Martin Tool's Adjustable Hook Spanner wrenches feature sturdy steel jaws and a maximum capacity range of 2” through 8-1/4”. Their sleek Industrial Black finish adds a touch of professionalism and they are versatile, fitting various nut sizes and featuring pins that fit snugly into flange or collar holes or slots. Ideal for tightening shafts or pipes, these unique wrenches offer adjustable openings for easy servicing of packing glands, collars, rings, locknuts, and more.