OSP Custom ATA Flight Case | QSC K12 Powered Speakers | ATA-K12 Rugged 3/8" Plywood with Black Laminate Tongue and Groove Metal Railing with High-Impact Ball Corners Industrial-Grade Rivets, Latches, Spring-Loaded Handles Heavy Duty Soft-Glide Industrial Casters (300lb duty rating for each caster, 2 w/locking mechanism) Rigid, Protective Foam Padding Throughout