... quality,9mm plywood with 1.5mm aluminum 3.OEM, best price 1.5 mm fireproof aluminum audio flight caseComposition of the ... 5 mm aluminum extrusions frame2.inside is elastic cotton to protect, also have microphone mode3.Have the shockproof effect, wheels convenient to ... flight case1,lightweight, high capacity with good fireproof plywood and aluminum.2,multiple specification, and can be customed by your ...