Designed to reach diodes in the back of rectifiers, this 24" extra long #3 Phillips Screwdriver is made with a chrome vanadium steel shank and a matte finish for exceptional strength and long life. Our Phillips Screwdrivers feature the following: Internal shank flanges to prevent the handle from slipping Black oxide finished tip to prevent corrosion and magnetized to hold fastener... https://jonard.com/hand-tools/screwdrivers-nut-drivers