Discover the durability and versatility of the Martin Tool Adjustable Face Spanner with its drop forged steel bar construction and adjustable opening feature. Available in sizes from 1/4" to 4", this wrench also features pin diameters of 3/16", 1/4", and 5/16" and an industrial black finish for added strength and longevity. Perfect for tightening shafts or pipes, and servicing packing glands, adjustable collars, rings, locknuts, and more.