The Bullet Time Cord for the Insta360 ONE X2 camera allows you to spin the camera overhead in Bullet Time mode. Screw it into the 1/4"-20 thread on the bottom of the camera, pull out the retractable 43" cord at its full length, and then swing the camera above your head in a circular motion. A rubber ring on the bottom of the 1/4"-20 screw ensures that no damage will be done to the bottom of your camera where the 1/4"-20 threaded hole is.