This Bloggs replacement chain fits 20"/510mm guide bars with a 0.325" pitch, 0.058" gauge, and 76 drive links. It is compatible with any chainsaw — regardless of make or model — as long as those three specifications match your bar and drive sprocket. Pitch controls how the chain engages the sprocket teeth; gauge sets the fit of the drive links in the bar groove. Running the wrong gauge causes the chain to either rattle loosely or bind in the groove, both of which accelerate wear and compromise safety.At 0.058" gauge this is a heavier-duty chain than the finer 0.043" options, better suited to high-torque saws handling sustained heavy cutting. The 20" bar length hits a practical sweet spot for most landowners and arborists — long enough to fell and buck substantial timber without the handling penalty of a 22"+ bar.
