The Blade-Tech Duty Belt Loop 3" is a belt clip specifically designed for belts. They are, for instance, often used by the police and the army. It has room for belts up to 3" (7.5 cm). Inside you will find an adjustable beam that enables you to also use smaller belts (up to 4.5 cm). It has enough room for belts up to 8.5 mm thick.
On the mounting side you will find a couple of mountings holes in the shape of a T. The holes are approximately 19 mm apart (centre to centre). Three screws are included.