The EnduroSat Cubesat 6U structure is a CubeSat structure designed to have a minimalistic design and are easy to assemble. They also provide a physically safe environment for the customer's payload and subsystems during all phases of the mission (e.g. launch phase). These qualities ensure stable operation of the CubeSat. Our Structure products comply with the CubeSat standard and are compatible with a wide range of CubeSat subsystem producers. EnduroSat's Structure 6U comes with kill switches, fasteners and ring elements. The ring elements are additional aluminum elements which are added inside the structure to increase the mechanical strength. EnduroSat's Structure 6U is made up of 4 main element types (Bottom, Top, Side, and Ring). The Ring Elements are used to add rigidity to the structure where required. Their number and position depends on the internal configuration of the satellite's subsytems and payload. Ring Elements can be mounted on any M3 countersink hole along the Z or X axis according to the CubeSat Design Specification. This allows the subsytems to be stacked as required. The four holes of the Ring Element can be M3 threaded upon request.