This is a A-B1BSC50S057P CH LOOP-57DL 3/8"LP .050GA-REPL 91VXL57 PN: B1BSC50S057PMain Description As Following : A-B1BSC50S057P CH LOOP-57DL 3/8"LP .050GA-REPL 91VXL57 PN: B1BSC50S057P Found in Section & Models : Sunbelt - Chainsaw & Forestry > Saw Chain, Timber Ridge SAW CHAIN LOOP: SEVERAL Associated Items : New Also This is An Aftermarket Product And : Chisel: Semi Chisel Drive Link: 57 Gauge: .050 Pitch: 3/8LP