This is an American Series 5570 Brass non-key retaining padlock. SPP and gutted using a TOK tension wrench and a custom homemade Offset Cradle lockpick made by Cowbite. One of the harder locks I have picked, it was a right cunt to get on video. Great fun to pick though, all serrated key pins, three serrated driver pins and three hybrid spool pins. Thanks for watching.