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This 6 pack of semi chisel chainsaw chains is designed for 16 inch bars. Compatible with Echo and Craftsman models, these chains feature a .050 gauge and 3/8 pitch. Part numbers include 91PXL057G, S57, 36360050057, 63PM357E, and 91PX57CQ.
The catalog often lists the same model at several merchants — worth a price check before you buy.