1" D x 2-1/2" L HDPE Drain Tube (520320-1) by Sea Dog®. Drain Tubes remove water and fluids from motor wells, livewells, and baitwells. They are flanged 90° on one end and fit standard 1” diameter holes. These drain tubes feature an adjustable length to accommodate bulkhead installations from 3/4” up to 2-1/2” thick. Drain tube nut locks in place for a tight, leak-proof seal. Designed for use with snap handle and T-handle drain plugs. Save on installation time; no flaring tools necessary! Constructed of durable impact resistant injection molded HDPE or ABS.