4E-D1A-06-S DYNA-LIFT 4 CYLINDER TABLE LEG LIFT ASSEMBLY, 115 VAC (ROCKER SWITCH INCLUDED) (60 HERTZ), INLINE TUBE PORT/A-STYLE CYLINDER MOUNTED INSIDE 1" SUPPORT SLEEVE, INSIDE 1.5" X 1.5" D-SHAPED HOUSING WITH (4) 1/4-20" MOUNTING HOLES, REQUIRES NO EXTERNAL GUIDE SUPPORT, STRAIGHT CYLINDERS & STRAIGHT PUMP FITTINGS, 3/8" ADAPTER W/ 3/8" FOOT GUIDE, 6" (156 MM) CYLINDER ADJUSTMENT RANGE, STANDARD ELECTRIC PUMP