Round Padlock with Different Key - One order comes with a pack of 4 keyed padlocks and keys. Each pack of 1 padlock equals 2 keys. To increase the security of the keyed padlock, the keys are different in each pack. Dimensions - 2-3/4 inch wide lock body; shackle 3/8 inch diameter with 5/8 inch length, 3/4 inch width. Widely Used - For indoor and outdoor use. This round padlock is good for public lockers, pods, storage units, garages and sheds, trailers, moving trucks and more. Strength and Security - The disc padlock with stainless steel construction and chrome plated hardened steel shackle, increased strength and security. Heavy Duty Round Padlock - Made of stainless steel and sturdy chrome plated hardened steel shackle, resistant to rust and corrosion, for indoor and outdoor use.