This is a genuine manufacturer-sourced component which is designed for use with DeWALT saws. The device helps to reduce splintering and chip-out on the cuts. It also prevents thin slices of wood from jamming in between the blade and the plate during a cut. If the part is missing or damaged it needs to be replaced. Check the owner's manual...Read more for your model to ensure the correct application. Note, this high-quality anti-splintering device is made of durable material and is sold as an individual item.