Perko 1-1/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck is threaded to approximately 3/16 inch from flange.Cast bronze, plain or chromed brassRegular or short length versonsRegular Length- Fits maximum hull thickness up to 2 inchesShort Length- For thin hull sections up to 5/8 inches maximumRegular Length - Plain Bronze Technical Information:Hose Size Inches: 1-1/8Mounting Hole Diameter Inches: 1-5/16Maximum Hull Thickness Inches: 1-3/4O.D. Flange Inches: 2-1/4Model Number: 035006ADPPShip Weight: 4.7/9.0 lbs.Made in the USA