The 4 hole - tee flat plate is a strong, external fastening method that requires no machining services and can be used to connect more than two profiles together. This fastening option can provide infinite positioning along the profile T-slot, allowing for a large degree of adjustability. It is a long-lasting connection that is easily assembled and can be repositioned and reused. 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.