Features: 1. Screw depth limiter for plasterboard, floor, wood board, plywood, density board, etc. 2. Chrome vanadium steel material, high strength and long service life. 3. Work with screw bits of 6.35mm shank diameter, built-in magnet makes operation easier. 4. Knurled anti-slip design, not easy to slip, convenient to use. 5. Equipped with a spring to adjust the depth of screw hole flexibly.   Specification: Material: Chrome vanadium steel Bits Shank Diameter: 6.35mm (1/4") Bit Length: 25mm Limiter Length: 65mm Package Weight: Approx. 152g / 5.3oz   Package List: 1 x Limiter 12 x Screwdriver Bits Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.