A 12" guide bar and semi chisel saw chain. The length of the guide bar is the effective cutting length and not the overall length of the guide bar. Please compare the picture with the mount end on your old guide bar and check your sprocket (clutch cover) is stamped 3/8 to ensure this is correct for your chainsaw. By purchasing the guide bar along with a new saw chain it will prolong the life of the bar and a saving will be made on the postage. To order a replacement chain please search our listings for 3/8 LP .050 45 DL To sharpen the chain requires 4mm round file. Files and various filing kits can be found in our others listing, please search 4mm file. The guide bar is similar to Oregon Part No: 120SDEA041.