This comes with the removable pin which allows you to either attach to the molle utility / weight belt system or any place on your rig that you do not want to unfix your whole harness to add a D-Ring
This is a 2" inch Stainless Steel straight D-Ring
6mm means this is one beefy D-Ring!
It is a 6mm thick D-Ring
**Use a 3mm Allen Wrech to remove the pin in most cases! They do send some with different fitting and no we do not know which ends they send so please understand!!