Square Head Plug 1 1/2 in Nominal Pipe Size Stainless Steel 316L Class Class 150 For Pipe Schedule 40 Male NPT 1 1/2 in Outside Diameter 40.3 mm Overall Length 300 psi Maximum Operating Pressure 150 psi Max Steam Pressure -20 Degrees to 350 Degrees F Plug Drive Style 2 in Square Includes Pre-Applied Thread Sealant No Includes Seal No 11 1/2 Magnetic No