Machinery Eye Bolt System of Measurement Metric Eyebolt Type Lift with Shoulder Material Steel Finish Plain Thread Size M20-2.50 Thread Length 57 mm Shank Dia 20 mm Shank Length 57 mm Shoulder Dia 33.27 to 36.58mm Shoulder Length 8.76 mm Eye Inside Dia 41 mm Eye Outside Dia 81.0 mm Overall Length 157.2 mm Length from Ream Center - Working Load Limit 2 860 lb Includes -