This Stalwart 13 Piece Power Bit and SAE Nut Driver Set features a variety of standard sizes and types for UAV’s, drones, small electronics, automotive, hobby & home. This compact and portable set is not meant to provide a full range of sizes and bit types but is intended to give you enough variety to do the job when access is limited or you don’t have the ability to carry a full set of repair tools. The bits and drivers are color coded for easy size identification. The quick release chuck on the adapter allows rapid change out of bits and magnetized nut drivers. All parts are stored in a durable non-skid backing case for easy storage and travel.