The backer is made from 3/16" black delrin and is tough.....strong enough to take on anything you can throw at it in the 3 gun game. A very simple and innovative design!! This single piece Backer allows you to attach 2 QUALOADS to a Tekloc or ELS hook. Rotatable up to 45 degrees, The Backer will also allow you put the QUALOADs horizontal on the Tekloc system. This now makes for the smallest foot print available to put multiple holders on your belt and not take up too much real estate. You can also remove the QUALOADs from your belt and attach them to our 2" nylon web belt so that you can wear them on your chest. VERY ROBUST!!!