Specifications: 1) Displacement: 49.3cc 2) Fuel tank capacity: 0.55L 3) Oil tank capacity: 0.26L 4) Chain brake system: Manual/auto 5) Chain saw type: 21BP 6) Chain tensioner: side 7) Standard bar type size: sprocket 18 inches 8) Sprocket type: rim Features: Famous brand of accessoties-Oregon chain, Carlton Bar