![enter image description here](https://i.stack.imgur.com/yiDE7.gif)
PLIERS
Used as pliers.
Stripper
80 - 22/20
Strip 22-20 AWG (.8 mm) wire.
1.0 - 18
Strip 18 AWG (1.0 mm) wire.
1.3 - 16
Strip 16 AWG (1.3 mm) wire.
1.6 - 14
Strip 14 AWG (1.6 mm) wire.
2.0 - 12
Strip 12 AWG (2.0 mm) wire.
1.6 - 10
Strip 10 AWG (2.6 mm) wire.
CUT
Used to cut wires and cables.
LOOP
The loop hole is used to bend hooks in wires, so that the wire can be attached to screw terminals. Place the tip of a stripped wire into the hole, and bend the wire around the body of the tool.
Screw/Bolt Shearing Holes
The other holes in the middle of the body, are screw/bolt shearing holes. They are used to cut small screws/bolts to length. To use them, simply thread the screw/bolt into the proper sized hole to the desired length, then squeeze the handles together. The screw/bolt will be trimmed, without damaging the threads.
CRIMP
INSUL AND NON-INSUL
This means that you can crimp insulated and non-insulated crimp terminals
16 - 10
This means the tool can crimp insulated and non-insulated 16-10 gauge crimp terminals. The colors below represent the color of the insulated crimp terminals, for quick reference.
- Blue = 16-14 Gauge
![enter image description here](https://i.stack.imgur.com/2dQ5T.png)
- Yellow = 12-10 Gauge
![enter image description here](https://i.stack.imgur.com/sUtKR.png)
22-18
This means the tool can crimp insulated and non-insulated 22-18 gauge crimp terminals. The colors below represent the color of the insulated crimp terminals, for quick reference.
- Red = 22-18 Gauge
![enter image description here](https://i.stack.imgur.com/O6aOF.png)
INSULATION ONLY 7 - 8MM AUTO
This means the tool can crimp insulated 7-8mm auto ignition wires (spark plug wires).
The Leatherman bits are standard hex sized only flattened. They should fit in any standard hex that is open or deep enough for the double sided bits to fit.
However be warned, without the custom sided attachment to grip the long thin side, the reduced surface area is more likely to round off the bits or the tool under significant torque.
![enter image description here](https://i.stack.imgur.com/LR5a5.jpg)
Although Leatherman apparently doesn't think it's a problem as their bit extenders have a standard hex on the end and show it holding these bits.
![enter image description here](https://i.stack.imgur.com/jLofw.jpg)
Best Answer
Those are grommets, not snap-rings or snap holes. Grommets provide a permanent ring providing an anti-tear resistance.
They are used to hang the tool roll from nails/hooks on a wall, for easy access to the tools in the roll. This would need fewer hooks than hanging each tool separately.
This is pretty rare in my experience, most workshops would hang tools on pegboard, or lay out the tool set in a drawer, or store the whole lot in a toolbox. I have one roll of ring spanners like this that lives rolled up in my car.