This is dead stock from my parents' house♪ NO.350 50mm, it seems to be discontinued, so I don't know the detailed specifications, but I think it's an easy-to-use size that fits comfortably in the hand. Measurements are approximate, for reference: Shaft length: 50mm Shaft diameter: 4.5mm Handle diameter: 22mm Total length: 152mm Please understand that there may be age-related deterioration, etc., before purchasing. #VESSEL #Vessel #Screwdriver #Flathead Screwdriver