Ceramic block, 4 terminals, for NB2 head
Polypropylene, ½ NPT Tube Entry, ½ NPT Wire Entry, 2 terminals (CH-73)
Polypropylene, ½ NPT Tube Entry, ¾ NPT Wire Entry, 2 terminals (CH-73)
Aluminum, ½ NPT Tube Entry, ½ NPT Wire Entry, 2 terminals (CH-49)
316 stainless steel, ¼ NPT Tube Entry, ¼ NPT Wire Entry, No internal terminals
316 stainless steel, ¼ NPT Tube Entry, ¼ NPT Wire Entry, 2 terminals (CH-73)
316 stainless steel, ¼ NPT Tube Entry, ¼ NPT Wire Entry, 4 terminals (CH-74)