The Premium line flightcases all excel in the materials used. 9 mm high grade plywood, combined with Penn-Elcom hardware and CNC machined foam interiors to keep the Infinity iW-741 units safe during handling, rigging and transportation. Dedicated case for 4 units of Infinity iW-741 and, as a small extra, including 1 pcs of the Infinity Stage tool to make rigging life a bit easier.