The GE TKMHM2 is a TDM door-mounted operating handle with fixed or adjustable shaft. Complete Mechanism with NEMA 1/3R/12 Handle for TKC, TKM, THKM, TB6, TBC6, TB8, TBC8 circuit breakers. Box depth: Extended Shaft, 7 1/32" - 17 5/16". UL Listed (File E-57253).