Displacement: 45cc and 51cc guide bar size: 45cm and 50cm certificates: CE, SGS, EMS Best ... link of chain 0,058 in0,058 inType of guide barOREGONOREGONLength of guide bar45 centimeters50 centimetersCertificatesCE,SGS,EMSCE,SGS,EMSSystem of presentationThe ... automatic begin to swing is with a regulator gas chain saw