This cartridge heater has a 304 Stainless Steel sheath and has these specifications: 0.5" OD 8" Insertion Length 8.37" OAL 240 volts 500 watts 38" FG lead w/ Std. Flange. This Today heater can usually ship the same day, if ordered by 1:30 CST. Out of stock, epoxy potting, and NPT fitting heaters can ship in two business days.