Kit Contents: #4 Black Oxide Stainless Steel Finishing Cup Washers - 50 pieces#6 Black Oxide Stainless Steel Finishing Cup Washers - 50 pieces#8 Black Oxide Stainless Steel Finishing Cup Washers - 50 pieces#10 Black Oxide Stainless Steel Finishing Cup Washers - 50 pieces#12 Black Oxide Stainless Steel Finishing Cup Washers - 50 pieces#14 (1/4") Black Oxide Stainless Steel Finishing Cup Washers - 25 pieces This fastener kit features a commonly used size assortment of Black Oxide 18-8 Stainless Steel Finishing Cup Washers all in a durable and organized plastic compartment box. Finishing Cup Washers are used to provide a finish and smooth look where the fastener head is flush with the top of the finishing cup washer. Used primarily for their aesthetic look, they are also used under the head of flat or oval head countersunk screws. Black Oxide 18-8 Stainless Steel Finishing Cup Washer Kit Black Oxide 18-8 Stainless Steel Washers Black oxide washers offer the durability of stainless steel in a sleek black finish. All washers in this kit are 18-8 stainless steel with a black oxide treatment to make them more corrosion, rust and abrasion resistant for a long lasting finished look. Most Common Sizes This kit has been curated and hand assembled by our in house staff to include a size run of our best sellers, as well as sizes commonly used together. Labeled Compartment Box The clearly labeled compartment box makes identifying and storing the correct fasteners in the correct places a breeze. Always know what you have at a glance! Finishing Cup Countersunk Washers Finishing Cup Washers are used to provide a finish and smooth look where the fastener head is flush with the top of the finishing cup washer. Used primarily for their aesthetic look, they are also used under the head of flat or oval head countersunk screws.