Brass air gap completely covers clamping collar.</br>5/8" dishwasher inlet.</br>7/8" outlet to disposal or sink.</br>Complements KOHLER(R) faucet finishes.</br></br>Product Description</br></br>The air gap completely covers clamping collar and prevents the buildup of dirt. The body is made of polypropylene.</br><br/>http://www.amazon.com/gp/product/B0018KTL4W