Oregon PowerNow 550685 14-Inch 91PX Replacement Saw Chain Chain Pitch - 3/8-inch. Cutter Style - Chamfer Chisel. Chain Gauge - .050-inch. Kickback reduction - Bumper Drive Link. Bumper Drive Link - Reduces kickback without sacrificing performance. Meets ANSI B175.1 (and CSA Z62.3) standards for low-kick-back saw chain. Chamfer Chisel - Twin cutting corners offer outstanding performance, durability and easy maintenances. Lubri Links - Tie straps help keep oil where it's needed - on the chain. Lubri Well - Oil holes in the drive links help carry oil the full length of the guide bar groove.