Description This is a of quick release screwdriver bit holder that fits most standard size screwdriver Made of carbon steel, it features high hardness, wear-resistant, non slip, large torque,. Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended.-flexible driver extension Feature-flex bit extension - ColorSilver-drill extender attachment - Material: carbon steel-tool bit holder - Size: 15 x 0.8 x 0.8cm-bit holder with set screw - quick release screwdriver extension bit holder.-universally fitting drill bit extenders - Made of carbon steel, it features high hardness, wear-resistant, non slip, large torque,.-flex bit for drill - Extensions in lengths 75mm, 100mm, 150mm, fits most standard size screwdriver -portable drill bit holder - Strong permanent hold bits securely in place.-magnetic extension holder - Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended.-magnetic drill bit extension Extensions in lengths 75mm, 100mm, 150mm, fits most standard size screwdriver bit -masonry drill bit set quick release magnetic screwdriver extension bit holder -bendable drill bit extension Strong permanent hold bits securely in place -locking bit extension Made of carbon steel, it features high hardness, wear-resistant, non slip, large torque, -quick release bit holder Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended-magnetic bit holder extension rod