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