This is a new Ovallok high security padlock from W-lok (www.wlokcorp.com). The model # is SK-977524 and it is made from stainless steel. The lock was designed in the USA but the manufacturer, Waterson, is in Taiwan. The lock shackle is 1/2″ (12.7mm) diameter and the lock width is 2.6″ (66mm). I am not a professional locksmith, but I do believe that this is a very high quality and high security padlock.
Correction: the key needs to be rotated approximately 180° and not 270° like I mention in the video.
Apologies for the autofocus issues from my cellphone camera.