This 9" coil cover fits Fisher F11, F22 and F44 metal detectors. It easily snaps onto the bottom of your expensive search coil to protect it. This cover also gives added protection against cuts, slits, and excessive wear. No need to remove. Absorbs shocks and moist grass static. Keeps coil clean and scratch free. Made in the USA from a form fitting high-impact plastic. Very highly recommended. No tools required. Does not reduce detection depth.