75958 is a 36 piece gobox precision micro bit set. It contains slotted, Phillips, Hex, Torx, Pentalobe, Standoff, and Y-Type micro bits. The PicoFinish micro bit handle 3.9" has a finger control rotating cap for rapid rotation, and an extra-long cap for optimal hand positions and smooth turning. Micro bits consist 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 user pocket for easy portability.