Master Lock Government Safety Lockout Padlock, Zenex, 1 1/2 inch, Red, 1 Key, 6/Box

I got two of these to practice lock picking on as I've been told these can be difficult. Well.. They are difficult to pick. 7 pins and I'm pretty sure most if not all of them are security pins. Probably for the best given their intended use!

Locking position is midway in the locking body. Good quality Lock cylinder. not hardened shackle as expected. Does the Job intended.

Recomendado

Works good

A great intro to these locks is the Lockpick Lawyer's 'Master lock paradox' video, although I see he had similar questions about it's construction as others in the comments. The lock is made of strong thermoplastic to avoid conductivity in electrical workspaces and so it can be removed with a sledgehammer in an emergency. It's main purpose is to lock away dangerous and restricted equipment from curious workers and is therefore equipped with a decent 6-pin brass core with security spools and at least one serrated pin, so to avoid it being picked by a bored worker. It's locking mechanism is ball-bearing and therefore resistant to shimming. I am told most of these locks have 1 serrated pin on pin 5 and on the rest of the pins, spools. The core is a 'dead core' and has no spring-back mechanism.These are a real challenge to pick and after a day of trying I still haven't managed to get it open. I'm even finding it difficult to set any pin or reliably get into a false set! Novices claiming to have picked this lock immediately either got very lucky with the bitting or are extremely talented (or are lying). My bitting was a quite aggressive high-low profile, so I have a real monster on my hands.My only complaint is that there is a little play on the core but this adds to the challenge. Also, the warding outside the padlock can really interfere with the angle of your pick but I am told there is an 'edge' version where the key-way is flush against the shell of the lock. You will probably need some extra thin picks to maximise your chances here. Good luck!!!