Rectangular Water Bath is made up of Inside stainless steel and outside made of mild sheet with epoxy powder coated with Temperature controlled by hydraulic thermostat from 5 deg.C above ambient to 100 deg. C - Sensitivity of + 1 deg. C with 2 pilot lamps & onoff switch - Size: 6 Holes or 12 Holes of 75 mm. diameter - 220230 Volts A.C. 50 Hz