Features: General purpose adjustable wrenches have a screw mechanism located at the bottom of the head to open and close the jaws for a tight grip on a variety of fastener sizes. Material / Alloy Steel Finish / Black Phosphate Overall Length / 18 in Jaw Capacity / 2 3/8 in Grip Style / Ergonomic Handle Type / One Piece Adjustment Type / Screw Mechanism Measuring Scale / Yes Insulated / No Nonsparking / No Non-Magnetic / No Corrosion Resistant / Yes End Style / Hang Hole Handle Length / 18 in Head Type / Standard Jaw Material / Alloy Steel Jaw Texture / Smooth Lockable / No Measurement Type / Metric, SAE Opening Type / Adjustable Ratcheting / No Standards / ASME Tether Style / Tether Capable