This is a Raven Concealment Systems Holster Attachment known as the OWB Standard Belt Loops, model 1.75 STD LOOPS BK PH R.
These are their standard OWB belt loops designed specifically for their Modular Holsters and Carriers. They have upgraded their belt loops. They are now made from a nearly unbreakable high-strength polymer. You can order these as spares" upgrades to your current gear" or in a different belt size.
Features:
Outside the waistband standard belt loops
1.75";For right handed Phantom holster