Size;9 Power Nut Driver Drill Bit Set Specifications are5mm/6mm/7mm/8mm/9mm/10mm/11mm/12mm/13mm Material: screwdriver nut driver made of heat-treated chrome vanadium steel ultra-high hardness, high hardness, not easy to break, rust-proof, extended service life Equipped with multi-size nuts for a variety of manual and electric bit fastening inner hexagonal easy to install and disassemble to prevent shedding and flexible use Applicable tools hexagonal tools Pneumatic screwdrivers, electric screwdrivers, pneumatic drills, electric drills, pistol drills, manual screwdrivers Used in home decoration, automobile maintenance, carpentry DIY, professional equipment maintenance with nuts Quantity delivered: 9 pieces Product color: silver Product specifications: 5-13mm Product weight: about 150g Tips: It is normal to have a little error in manual measurement. The data is for reference only. Due to light display and other reasons there is a little color difference, please understand