Extension Nominal Pipe Size 1 1/2 in Color White Product Type Extension Standards Not Applicable Material Plastic Overall Length 12 in Pipe Inside Diameter Not Applicable Pipe Outside Diameter 1 1/2 in Thread Size 1 1/2 In.-11.5 NPSM For Use With Waste Tube Drain Gauge - Includes Nut and Washer Finish Not Applicable Connection Type Slip