Fused Sight, Body Material Carbon Steel, Connection Type Pipe Threads, Window Material Glass, Reflector Material Not Applicable, Window Features Fused Window, For Liquid Clarity Clear, For Fluid Type Liquid, Thread Gender Male, Thread Size 1-1/4 In.-11-1/2 In., Hex Width 1 3/4 in, Pipe Size 1 1/4 in, Thread Type NPT, Window Diameter 1 19/100 in, Maximum Operating Pressure 1,000 psi, Maximum Operating Temperature 500 Degrees F, Body Material Finish Electroless Nickel