Shrouded Shackle. No need to ever turn your combination padlock upside down and squint at tiny numbers as in other combination padlocks! The FJM padlocks feature user friendly large, front facing dials. Resetting feature is built into the product with no pin or key to lose as in other products! No internal springs that become corroded over time and require the padlock to be slammed/shot gunned in other padlocks. User friendly, high quality all corrosive resistant metal product at competitive pricing. Inside shackle height 1e, 5/16e diameter hardened steel shackle.