The Milwaukee 9-in-1 Square Drive Multi-Bit Driver features 3-1/2 in. interchangeable power groove bits that are power tool compatible providing users with maximum job site versatility. The multi-bit screwdriver also has wrench-ready hex shanks giving users additional leverage. The interchangeable bits are precision machined and chrome-plated, providing marine-grade rust protection and reduced wear providing users with the best job site durability. The compact screwdriver features magnetic bit retention giving users consistent driving performance. The Milwaukee 9-in-1 Square Drive Multi-Bit Driver is designed for the job site and includes Milwaukee's Limited Lifetime Warranty.