DOP200RNDD176LO 20" 3/8"Pitch .050 Gauge Power Match Double Guard Chain saw Bar fits Lombard Chainsaws. Replaceable Sprocket Nose. Fits Large Style 3/8" Pitch Chainsaw Chains (72 Series). Fits Lombard model AP-52, Comango, CS-3500, CS-3501, CS-3502, CS-3503, Lightning III, Super Lightning Chainsaws.