The 4 hole - straight transition flat plate connects profiles within the same product type (either fractional or metric) but of differing series. It is an external fastening method that requires no machining services. This option is reconfigurable and reusable and can provide infinite positioning along the profile T-slot, allowing for a large degree of adjustability. The suggested mounting hardware can be found on the "Suggested Hardware" tab. Tip: Use a double slide-in economy T-nut to save time and money. Pre-load your hardware prior to connecting profiles to simplify your assembly.