Klein Tools' All-in-1 Precision Screwdriver Set with compact carrying case features 39 precision bits. This set provides everything you need to work with electronics and precision fasteners including those for Apple products such as Apple iPhone, MacBook, and Watch. The reversible barrel is standard on one side and extra-long on the other for those hard-to-reach jobs. Powerful magnets housed in the barrel better secure the bit, which also allows it to easily pick-up and retain fasteners. The Cushion-Grip handle and spin cap provide outstanding comfort and control.