The case is constructed of 1/4 Inch plywood with a thick vinyl PVC laminate on the outside and assembled with heavy gauge aluminum extrusions machine split riveted throughout. The corners are protected by heavy gauge steel ball corners and the lid hinges open. All the recessed catches, along with a surface mounted handle are spring loaded for strength and shear resistance. A key lock is included to insure safety while traveling or leaving your instrument unattended. Heavy duty barrel dolly wheels are mounted to one end of the case for easy transport of your instrument. This case also offers a precision die cut foam inside with an accessory compartment to keep all the needs of your instrument organized and easily accessible.