Monoblock Gear Clip™ 1.5" + Hardware kit - Discreet Carry ConceptsThe Monoblock is engineered to be mounted directly to the holster body or other solid surface. Recommended hardware configuration from top to bottom: Screw, steel washer, Monoblock clip, body of the holster. The nut is placed on the inside. For some applications, the metal washer can be placed behind the clip or may not be used at all. Please verify clearances to ensure the square nut is compatible with your specific holster brand and it is recessed