Extension Nominal Pipe Size 1 1/4 in Color White Product Type Extension Standards Not Applicable Material Plastic Overall Length 6 in Pipe Inside Diameter Not Applicable Pipe Outside Diameter 1 1/4 in Thread Size 1 1/4 In.-11.5 NPSM For Use With Sink to Drain Gauge - Includes Nut and Washer Finish Not Applicable Connection Type Slip