Ram Mount 1.5" Arm Security Lock

FP89930 has security solutions are designed to withstand the harshest environments where RAM® Mounts are commonly used. With an emphasis on aesthetics and function, RAM® security nuts/knobs are low profile and only add a small amount of additional bulk to your system when compared to the standard knob included. They are a fraction of the cost of currently available keyed locking knobs, the additional peace of mind and tamper resistance comes at a very affordable price.
Dimensions: Overall Length: 5.625"
Socket-To-Socket Length: 4.5"