No. 1 Laminated Steel Padlock, 5/16 in dia, 3/4 in W x 5-3/4 in H Shackle, Silver/Gray, Keyed Alike, Keyed 3900

Non-rekeyable cylinder or universal pin, laminated steel body for superior strength
Hardened boron alloy shackles for extra cut resistance
Proprietary rustproofing for longer life
Commercial grade padlock features superior protection from drilling and prying
Dual ball bearings locking for maximum pry resistance making it ideal for industrial applications