Oregon 138PXBK041 - 13" AdvanceCut Chainsaw Guide Bar Challenge Xtreme When the rim wear reaches

When the rim wear reaches the depth of the indicator

Micro-Chisel® saw chain - 20BPX - Lightweight smooth fast cutting chain for homeowners and professionals

3/8" pitch (Oregon Type 91) with 52 drive links

68210 - Oregon 3/8" STANDARD7 7 Replaceable Powermate Drive Sprocket Rim

Extremely sturdy during use as the body consists of 3 welded metal plates

Oregon 138PXBK041 - 13" AdvanceCut Chainsaw Guide Bar Challenge Xtreme When the rim wear reaches138PXBK041 Oregon 13" AdvanceCut Chainsaw Guide Bar Slim symmetrical contour is light in weight, excellent manoeuvrability, and reversible for long life. LUBRI DAM oil retaining feature prevents oil from running out of the bars tail, keeps more oil on the bar and chain. Requires a 0. 325" pitch, 1. 5mm (0. 058") gauge chain. Oregon Type 21 Replaces 138SLBK041 & 138PXLBK041