An Essential Locksmith Tool!
A1 produces this excellent lock plug spinner. These are incredibly useful and durable. The tool works with a coil spring that is wound using a turn handle that is then set in place.
Plug spinners are used if a cylinder is picked in the wrong direction, or if picking requires the plug to be rotated in one direction and then spun/flipped the opposite direction.
Plug spinners will spin the plug when picked and move the lower pins across the shear line without having any driver pins drop into lower chambers.