1-3/4" wide laminated steel case. Multi-spring warded locking mechanism. Cadmium rustproofing. Self-locking steel swivel shackle, nickel-plated, 9/32" diameter. Clearance: vertical 13/16", horizontal 13/16". 2 nickel-plated steel keys, 60 key changes. Only SKUs with KA in the model number are keyed alike padlocks and all item ordered from that SKU number would be keyed alike to the 4-digit key number shown in the product description.