"oregon" "chain" Manufactured In 1/4 "pitch, Thickness 1.3 Mm - 56 Meshes, Ideal For Precision Work. The 25th Is A Light And Safe Chain, Ideal For Pruning. Our Sharp Micro Chisels Have A Small Radius Angle To Guarantee Excellent Performance And Ease Of Sharpening, The Reduced Dimensions And Weight Make The 25a Chain Manageable. "