Thank you for choosing our products. Our new quick release rails are default designed for squarehole racks, but we have optional adapter for customers who use round-hole rack and threadedhole rack. For the threaded-hole rack, as long as the thread is M5 or larger, our screws with washer can pass through the flange to mount this adapter on the rack to connect to our rail. If customer's rack can install our chassis before, basically this rail can also be mounted on their rack. This adapter set is ready in our warehouse and for you to order anytime. This adapter set will running change to put in accessory box of the upcoming chassis, not in the current chassis yet.
