1-7/8" Hole Plastic White Thru-Hull Fitting for 1-1/8" D Hose with Broad Flange (50-18091) by Seachoice®. Per ABYC "Safety Standards for Small Craft". This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost. Not recommended for use below the waterline.