Replacement Oregon chain for Black & Decker 6-Inch Replacement Saw Chain RC600 For LP1000 and NLP1800 Alligator Loppers (2542) Micro-Chisel cutters feature small-radius working corners for excellent performance and easy sharpening Small size and light weight make easy to use and highly maneuverable Patented Chain Steel - Oregon OCS-01 steel is patented and provides greater durability, especially in cold cutting conditions.