Prostat Q007T - ESD Grounding Cube - Tube of 5 The Prostat Q007B Qube replaces ordinary electrical grounding devices with a convenient, cost effective means to connect several ESD controls to a single grounded electrical outlet. Use the Q007B Qube to ground workstations, mats, wrist straps & testers, instruments, and other ESD control products to a pre-tested facility electrical ground. It consists of a robust multi receptacle frame encased in fire retardant ABS with a solid brass grounding pin.CAUTION: For your safety, test your electrical outlet before use per ANSI/ESD S6.1.