Jones Stephens has built its reputation over the years as a leader in the plumbing industry, providing the market with thousands of products to complete any project. The Extension Cover Set is made from sturdy 24-gauge stainless steel and brass. This item includes both the wall cover and a countersunk plug, along with a 1/4- 20 x 4 in. flat head machine screw. It features a blind hole for mounting a cover plate to conform with local codes.