Our red Deck Jig™ Spacer Rings ensure a consistent 1/4" (6mm) spacing between your deck boards while you drive your screws to secure the board. Proper spacing ensures proper airflow, a cleaner deck, and a longer deck life. Features a large handle for quick placement. Designed to work with the Kreg Deck Jig™. Also available in 5/16" (8mm) size in blue.