I ordered the Pro Tech Toolkit, the Manta Driver Kit, and the Magnetic Project Mat. The 4mm and 1/4" Aluminum Precision Bit Drivers are absolutely amazing. The craftsmanship is fantastic and each and every bit i've used have slid in buttery smooth just like the rotating head on each. I would recommend these products to anybody wanting to always have the perfectly sized bit for any job. I'm extremely satisfied with my purchase and can't wait to find my next project. Everybody should look to iFixit for their repair / tinkering needs.
Note - Originally purchased to ultimately have an amazing set of tools to fix just about anything. First project was tearing down my 2016 MacBook Pro 13" touch-bar, and it kept the entire process organized and made it so much easier.