Hardware store carabiners vs climbing gear

There are many carabiners/snap hooks available from stores, but how strong are the different styles compared to proper climbing carabiners?
Here I perform tension break tests on a variety of snap hooks & carabiners in different materials and styles. Is stainless steel stronger than regular steel? do carabiners need to be closed? can i get safe carabiners from a hardware store? how much can i life with an 8mm snap hook?what's the difference between a climbing carabiner and a regular one?

Well i try to answer all thing and more in this vid!

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Cheers!

00:00 - Intro
01:29 - Aluminium snap hook
02:51 - Aluminium locker snap hook
03:37 - Plated steel snap hook
05:49 - Stainless steel snap hook
07:26 - Steel 10mm black carabiner
08:35 - CAMP Nano climbing carabiner
11:11 - Fall arrest carabiner
13:00 - Results
15:38 - Conclusions