Description This is a set of hex quick release magnetic screwdriver bit holder that fits most standard size screwdriver bit. Made ofcarbon steel, it features high hardness, wear-resistant, non slip, large torque, long service life. Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended. Feature - Color: As shown - Material: carbon steel - Size: 15 x 0.8 x 0.8cm - Hex quick release magnetic screwdriver extension bit holder. - Made ofcarbon steel, it features high hardness, wear-resistant, non slip, large torque, long service life. - Extensions in lengths 50mm, 100mm, 150mm, fits most standard size screwdriver bit. - Strong permanent magnets hold bits securely in place. - Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended.Package list: 3 x Drill Bit Extension