The difference between a one-word lock core and a plum lock core''s

It's obvious when you look at the key. Look at the words can be understood. Both are A grade locks, now C grade has begun to popularize.

This chart below is handy for cross-referencing lock cylinder levels

Baudy C grade leaf locks you bought earlier this year at a certain treasure railroad workers' home. Or ask at your local lock store, it will just be more expensive than online.