Belt for: ride-on mower lawn mower - Lawn tractor 11-12-14 HP MODEL 31601-31720 - single blade 76 cm with fan - 30" (motor/deck) - Model 31200 - 12 HP - single blade 76 cm - 30" rear discharge (engine/deck) - 30" mulching deck (motor/deck) Measurements: 1/2" x 57" compatible with MURRAY Code 680057 Reference original code 37x74