The 335 series Stubby screwdriver is designed to work in limited access spaces, like carburetor float bowl screws. Comes with special coating on the tip for a precision fit and a long service life. With anti-roll feature in the handle. Tip thickness at tip: 1mm. Tip width: 5.5 mm. Shaft length: 24.5 mm. Handle length: 54 mm. Shaft diameter: 5.5 mm.