TriLink�s S56 chain is a semi-chisel 3/8� LP pitch chain with hardened, chrome cutters for fast, smooth cutting in dirty conditions. The .050� gauge is standard for most chainsaws. All TriLink semi-chisel chain is UL tested and approved for low kickback safety. TriLink chain features the Centri-Lube� oil distribution system. Centri-Lube� pulls oil from the bar and distributes to the chain�s rivets reducing stretch, limiting field adjustments, and extending the life of the chain.