Pros:Meets CEN Grade 4 standards.Same quality i have learned to love from ABUS.Cannot be shimmedCannot be picked by a novice unlike master-lock or most other 40mm locks due to having more pins that make contact with the key.Cons:Lower end of physical security. Solid aluminum means it wont survive repeated hammer strikes however with a 1/4" shackle that's not the biggest security concern when they can cut it with mini bolt cutters or twist it.Can be bypassed.Neutral:Not Key Retaining (Will release key if the lock is unlocked)MiscBrady is ABUS's Health and safety company for the industrial sector. but you are getting an ABUS.This is not a tag out lock. It is not key retaining and comes with 2 keys not 1. which i prefer for home use but is not recommended as a LOTO lockOverallMuch better than a laminated steel padlock. light and would be great for lockers or the gym because you can throw it in your pocket and can get it in many colours. I purchased as a medium level lockpick practice But spend the extra 2$ and buy the Titalium for your shed because it has a thicker shackle. found here:https://www.amazon.ca/dp/B00G7P3FYA/ref=wl_it_dp_o_pd_nS_ttl?_encoding=UTF8&colid=1ELI2JDUEZ7EL&coliid=I154QPEJKXE5OZ