Jeweler's 21pc Precision Screwdriver & Wrench Set - Premium Quality Professional-grade tool set for precision work on jewelry, electronics and more 21 most-used tool styles and sizes (see description); hardened tool steel resists twisting, cam-out Hard-to-find open-end wrenches, nut drivers, Phillips, flat/slotted and hex drivers Handles have bolster bar holes for extra leverage on difficult screws & nuts Premium-quality - made in Taiwan; organizer case with slide cover fits neatly in tool drawer