Original DeWalt N563610 (Was N446582)— 16‑gauge driver blade / firing pin for DCN660 and DCN661 finish nailers. Precision‑machined, wear‑resistant steel construction transfers the hammering force cleanly to 16ga brad nails to restore consistent drive depth, reduce misfires and bent nails, and bring your tool back to factory performance. Direct‑fit replacement engineered for DeWalt DCN660/DCN661 16ga cordless finish nailers; installs quickly in the driver assembly and is sold as a single replacement blade. Keep one on hand with your other DeWalt  parts for fast field servicing and reliable trim‑work results.