Precision-machined jaws with smooth-moving knurl & rail provide hard-to-match performance & reliability. Heat-treated, chrome-plated steel head delivers solid durability. Strong, continuous-taper handle simplifies aligning nut-and-bolt & / or rivet joints as well as pipe flanges. Shaft features a contoured, ergonomic design, ensuring a more secure grip. Wrench Type: Adjustable Spud; SAE / Metric: SAE / Metric; Opening Size: 1 1/2"; 38mm; Opening Type: Adjustable.