The saw chain has three different tooth sequences: Standard tooth sequence: one connecting piece and one blade. Among the three blade sequences, the number of blade teeth is the largest, which can keep stable and fast cutting. Usually used for short or medium length guides. Semi-jumping teeth: Saw chain blade mode alternately arranges one connecting piece and one blade, and two connecting pieces and one blade. Between standard jump out and full jump teeth. Full skip tooth: Each blade is connected by two connecting pieces, the number of blades is half of the standard skip tooth. This full-jump saw chain is usually a long guide bar in those days, used to cut large soft trees. By reducing blades, improving the removal ability of wood chips during cutting, For long and deep cuts, this will improve its performance. Another benefit is that compared to other chains, you can reduce the time to grind the tool. Its disadvantages include easy vibration, not suitable for short cutting, and high risk of recoil. 1/4" pitch saw chains