The 1SKB-R5220W Roto-Molded 76 Note Keyboard is a hard roto molded polyethylene case with wheels. The case features a molded-in unbreakable carrying handle and integrated valance design which incorporates latching system. These latches are made with an indestructible material, easy to operate and can take the rigors of the road. Each case has roller blade style wheels for easy transport. With the new corner cleat system keyboardists can easily adjust the cleat positions to accommodate a variety of keyboard dimensions.