FP4 and FP5 replacement feathers offer unprecedented safety improvements and innovative new benefits. These interchangeable feathers are constructed of high-density EVA material and improve feed control, protect wood, and protects you and your tools in case of accidental contact between the feather and the blade. EVA has been shown to provide 5 times the kickback prevention as a typical plastic feather board. EVA will not bleed color, shed material or absorb fluid, which prevents damage to the workpiece. When pressure is applied, plastic can mar or affect the porosity of some woods. In addition, plastic does not absorb vibration like the EVA foam feathers. A better cut, more control, and added safety. EVA feathers simply deliver a better cut than plastic could ever offer. These replacement feathers fit exclusively on the BOW Products FencePRO FP4 and the Portable Saw Featherboard FP5. Each featherboard is sold separately. The RF45 Replacement fearthers are sold in a pack of 4. For the most innovative woodworking tools and accessories in the industry, choose BOW Products.