A shaft set includes plural shafts used for wood-type golf clubs each having a length of 40 inches to 48 inches. Among the plural shafts, a shaft used for a longer club has a smaller amount of change Δ1 in bending stiffness in a section from 600 mm to 800 mm from a tip of the shaft. Among the clubs using the plural shafts, the amount of change Δ1 in bending stiffness decreases at a constant rate in a range of 0.7×103 kgf·mm2/mm·inch to 1.6×103 kgf·mm2/mm·inch per inch increase in club length, and the bending stiffness at a position 800 mm from the tip of the shaft decreases at a constant rate in a range of 0.1×106 kgf·mm2/inch to 0.4×106 kgf·mm2/inch per inch increase in club length.