LOL. That's a 16" Homelite sprocket nose on it now. ModifiedMark sent me that NOS bar a while ago. I recently put a new loop of Oregon 76 on it. That's a now NLA 3/8" pitch chain with cutters between LP and 'regular' 3/8" pitch chain in size. Drivers are 'regular' 3/8" pitch size. Sharpens with a 3/16" file like .325 pitch chain. Pulls it well. I had it burried in a 18"-20" diameter Doug Fir log and it just kept pulling. I have a 20" hardnose that I'll put on it someday for poops and giggles. Don't know if you guy's have seen this yet, but it's a cool old commercial. That's a Super E-Z Auto with a 20" or 22" bar and regular 3/8" pitch chain.