[Standard industrial size] 1-1/2 in. wide lock body; 1/4 in. diameter shackle with 1-1/2 in. length, 25/32 in. width.
[Two keys per lock] One for use, one for personal backup, Each lock has a different key.
[Each key has a number] You can assign the same number to the corresponding lock. Or label according to your own needs.
[Safety design] A cylinder that is reserved for safety padlocks; key retaining feature ensures padlock is not left unlocked
[Including]: 30 locks, two keys for each lock. Every key is different. If you are not satisfied with our products, please contact us and we will reply to you within 24 hours.