This is our Forester Brand Platinum Bar for Stihl Larger chainsaws. 20" bar 3/8" pitch, .050 Gauge, 72 drives. This is a Professional Grade Chain Saw Bar. The new laser heat treating process allows the chain saw bar grooves to have consistent hardness. The nose is a replaceable sprocket nose. Compatible with the large Stihl mount. The chain is 3/8" full-chisel square non-safety (Does not meet the ANSI low kick back standard)