From Manufacturer
The InVision Video Hot Shoe Microphone Suspension from Rycote slides into the hot-shoe mount of most commercial camcorders to hold a microphones with a diameters between 0.7 to 0.9" (19 to 25mm), while protecting against camera motor noise and vibrations. It is designed to enable camcorder users and videographers to capture the best possible sound for their productions using an external camera-mounted microphone.
The InVision Video uses the patented Lyre Suspension webs with a molded grip design to prevent your mic from slipping or twisting. For ease in finding the right mounting position, the InVision Video rotates freely 360° on a slotted 4" (100mm) mounting bar. The cradle can slide freely on this slotted bar to keep your mic out of the shot.