Review on ARES 70009 - Comprehensive 33-Piece Security Bit Set with Magnetic Extension Bit Holder - Tamper Resistant, SAE Hex, Metric Hex, Star Bits, and More - Complete Anti Tamper Bit Set Including Torq, Spanner, and Triwing by Jeff Clites

I bought this because sometimes I disassemble and fix small machines (like my vacuum cleaner) and I'm tired of getting in the way with tamper proof screws. This set has many different sizes and types at a reasonable price. You usually only have a screw or two of this type at work, so I don't expect them to be of much use, but they're terribly nice to have on hand when you need them. They come in a small rubber case. with a piece that goes over the top and holds them in place. Compact, safe and convenient. I'm happy with them.