The Wiha 75958 GoBox 36 Piece Precision Micro Bit set contains Slotted, Phillips, Hex, Trox, Pentalobe, Standoff, and Y-Type Micro Bits. The PicoFinish Micro Bit handle 3.9"/100mm has a finger control rotating cap for rapid rotation, and an extra-long cap for optimal hand positions and smooth turning. Wiha Micro Bits consists of premium quality tool steel for strength and feature exact fit precision machined tips for reduced cam-out and have a 4mm hex drive. The complete compact Micro Bit set comes conveniently stored in a small metal case that fits in your pocket for easy portability.