A reliable Oregon saw chain that boasts a global share. Chain saw replacement blade. Please check the chain type (25AP, 25F, 21BP, 95VP, 91VXL). The number of feet (number written in "YES). Reference Materials:25AP/25F:1/4 Pitch 0.050 Gauge File Use Φ4.0 21BP: 325 Pitch 0.058 Gauge File Use Φ4.8 Use 95VP 325 Pitch 0.050 Gauge File Use Φ4.8 91VXL: 3/8 Pitch 0.0 50 gauge grille File uses Φ4.0