1) 25cc,38cc,41CC,45cc,52cc,58cc,62cc,82cc 2) Walbro carburetor,OREGON chain 3) 16"/18"/20" /24"Guide bar 4) CE,GS 5) OE Engine displacement:39.9cc Maximum engine power:1300w Fuel tank capacity:310ml Oil tank capacity:210ml Sprocket wheel:(3/8")pitch Guide bar type:Sprocket nose Chain bar length:405mm(16") Weight(including bar and chain):6kg big power chain saw