BOW Products FeatherDUO is a pressure comb that virtually eliminates kickback when working on a circular saw, router table or band saw. FeatherDUO has a secret, which is the unique EVA feathers and a special design with a “live” hinge. This combination presses the workpiece against the stop and absorbs recoil forces 5 times more effectively than plastic or wood feathers. EVA feathers increase the contact area with the workpiece, providing a smoother glide and superior feed control. Forget the vibration you get with plastic feathers. FeatherDUO gives you the cleanest cut, EVA feathers absorb vibration and minimize rattle for a cleaner, more precise cut. And best of all, these feathers leave no marks on even the softest wood. The feathers are replaceable and interchangeable. You can switch between ultra-flexible and standard feathers. They won't damage carbide blades or cutters from accidental contact. Patented AnchorPRO groove attachment, provides fast expansion and a super stronghold. Comfortable ergonomic handles make setup a breeze.