Searching for Multi tool EDC

Hi guys. Once again, Im turning to my favourite forum with so many knowledgeable members for advice!

Im curently looking for a quality EDC multi tool with a max price of about $50.

What I need in it are:

- Have a knife lock option preferably single handed for easy deployment (aka self defense)

- Small enough to fit as a key chain, pant pocketable.

  • Have general use EDC tools that can be of use such as saw etc.

Need some pointers where to start. I will post my findings a bit later.

4-in-1 screw driver, vice grip plyers and knife.
Works better and does the jobs without breaking and hurting you or by-standers.