Please note that this product is a defective item. SteelFiber fc 115CW iron shafts, set of 6, flex S, f4 I acquired these used, but the tip cut and butt cut amounts are not consistent, so I cannot determine which number irons they are for. Therefore, I am selling them as defective. For reference: Image 3: Misalignment of the cosmetics when aligned at the butt end. Image 4: Misalignment of the butt end when aligning the cosmetic pattern. I do not know the appropriate lengths for each iron number, so please make your own judgment. Please refer to the images for the lengths. Please understand that these are used items before purchasing.