Premium Aluminum Alloy Construction: This sturdy and durable carrying case has a hard aluminum alloy build exterior and it is interior has an impact absorbing form wall border to protect your gears from sudden drops and impacts Three-layer Customizable Foam: The carrying case features three layers of customizable pre-diced foam that can be removed to fit your systems and accessories including transmitters, receivers, and headset/lapel mic. You can design your own compartments. Perfect for all Phenyx Pro eight-channel wireless microphone systems, like the PTU-4000 & PTU-6000, and systems from other brands Specification: External dimension: 51.8 cm X 25.8 cm X 20 cm. Internal dimension: 50.5 cm X 24 cm X 15.5 cm. Weight:2.39 kg. Welcome to come to us for troubleshooting or replacement of discontinuous/defective parts.