The 8 hole - rectangular flat plate is an external fastening method that requires no machining services. It is a durable connection that can be easily repositioned and reused. The flat plate can provide infinite positioning along the profile T-slot, enabling a large degree of adjustability. When the bolts are tightened to the required torque the 2-degree drop-lock feature is engaged, helping to ensure the strength of the connection. Tip: Pre-load your hardware prior to connecting profiles to simplify your assembly.