Brady Steel Lockout Tagout Padlock - Keyed Different, 1-1/3" Body, 3/4" Shackle, Blue (6-Pack) - Ideal for Industrial Safety, Equipment Maintenance & OSHA Compliance

Note: I purchased this for lockpicking practice.This lock is a rebranded version of an ABUS 41/40.The shackle is very well hardened. A file barely made a dent in it, and a hacksaw only skittered across the surface and couldn't dig in.The body has only 4 rivets holding it together, but they seem to be very tight and flared in such a way that grinding them off was a real challenge, so I ended up just cutting right through the entire bottom lamination instead. I would not see the rivets as a security vulnerability.However, the lock loses points for using a spring-loaded locking pawl. While the shackle holes are fairly tight, I was able to shim it open.The lock core has 5 pins and a very tight and paracentric keyway. The lock uses spool security pins, and the machining and tolerances seem to be reasonably good. Good for practicing picking off side warding and not easy to pick.