HIGH-QUALITY MATERIAL: This RV Winterize Blowout Adapter is made from Metal which is durable and it can withstand high temperature. Beside brass also resist corrosion. with sturdy construction, it is not easy to break or decompatible withm and can serve you compatible with a longer time.KEY PURPOSE: This tool is perfectly designed to winterize garden hose, sprinkler systems, faucets (such as RV, camper, boat, travel trailer and so on that the vehicle with a water supply system) by blowing out water from the water lines/plumbing to prevent freezing of garden water pipes, sprinkler systems,and faucets. This fitting can be applied in any water system.STANDARD SIZE: 1/4 inch male air compressor quick plug to a Female 3/4 inch garden hose inner thread and 1/4 Inch Male Quick Connecting Plug and 3/4 inch Male GHT Thread, this is standard size and can be applied in most cases.EASY TO USE: Step one: screw the water pipe to the female thread side,connect the quick plug to the quick coupling inside the air compressor line, step 2: turn on the air compressor and rotate around the ball stem to open or close, step 2 adjust the air flow rate to blow dry water from the water pipeColour:yellowMaterial:MetalPackage Contents:2 x Faucet connector1 x Ring padOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.