The SignGuardian (SignGrabber) removal tool is specially designed for the SignGuardian bolts. It has a cushion grip with a 1/4 inch 1-Way bit. It serves as a 7-in-1 screwdriver. This tool is required if you have signs with any of the tamper proof bolts. You may want to relocate the signs or take them down.
The 7-in-1 screwdriver includes the 1-way bit, two slotted bits, 2 Phillips bits, and 2 Pozi bits.