... with nickel plated, 316 stainless steel, phosphor bronze and so on Movement: brass, stainless steel Connection: 1/8", 1/4", 3 ... /8",1/2", BSP, NPT or BSPT dependent on model and size, bottom, back, left side connection, lower back ... 500psi, 600psi, 5000psi,10,000psi and so on Windows(Lens) material: snap on plastic window, snap in plastic window, screw in polycarbonate window, plastic ...