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 This extension is designed for use in drain installation and maintenance.