I found a multi-tool with 24 slots, and they are in a nice 3x8 formation with no holes. I haven't seen any bigger tools since I got this one, when I was. There is so much universe to explore in No Man's Sky, but with such exploration, we find a very important detail almost since we started the. The Multi-tool is both your weapon and the most basic mining tool. The Multi-tool you start with has 5 slots for upgrades, with 2 of them taken by mining beam.
No mans sky multitool slots Video