Thermocouple Head 1. Material: Alloy-Aluminum or SS304 2. Weight:780g Thermocouple Head: Material: Alloy-Aluminum or SS304, CT6 EX-PROOF Weight 780g.Protection Tube Entry:PF1/2", PF3/4", NPT1/2", NPT3/4", BSP1/2", BSP3/4", M22X1.5 Extension Wire Entry:PF1/2", PF3/4", NPT1/2", NPT3/4", BSP1/2", BSP3/4", M20X1.5 Thermocouple Heads (CT6 EX-PROOF)