These simple to use instrument suction cup "bugs" are a great way to mark V-speeds, target altitudes, manifold pressure, RPM, or other important instrument indicators. The bugs are a clear suction cup with a yellow-tipped pointer that mounts to the face of any instrument. Allows you to quickly view important instrument information without obstructing your overall view of the instrument. A screw friction lock lets the yellow pointer tip rotate 360º both left and right. Simply move the pointer to the number you want to remember or visually quick-check. Completely portable which is especially useful when you are flying different aircraft. After flying, simply remove your "bugs" and take them with you. Now you're ready for whatever aircraft you fly next time.