The 99ST series of hook wrenches have a round nose designed specifically to engage the radial holes in certain UNI/ISO 2982 and 2983 ring nuts. The jaw is articulated to fit a wide range of sizes. These spanner-type wrenches have a chrome-plated, rough textured finish that hides scratches. The Beta series number and size are molded into the side of the handle for quick identification. A hole at the end of the handle can be used to hang the wrench from a hook or a lanyard. This wrench fits 35mm through 50mm size ring nuts. Measures 200mm long overall x 12mm maximum thicknessand the nose pin is 4mm OD x 4.5mm long.