What Toor Knives says:
Designed by DOTS, the Molle-Lock system is a durable and very effective mounting attachment for molle gear and each clip is long enough to feed through two Molle loops.

This package includes 1 Molle Mount clip and all mounting hardware that can be attached vertically or horizontally to your Toor sheath.

Instructions:

1. Line up the first and third holes of both the mount and sheath
2. Take the female post and slide it through the back of the sheath holes
3. Insert the rubber bushing in between the mount and sheath
4. Insert the screws through the mount, attaching it to the female post

Quinn Knives' take:
While this is designed for use with a Molle system, we've found that i can also work with a thin belt, like a duty belt / web belt.