The C300 Mark II Helmet is a mini cage designed to mount directly to the top of the Canon C300 Mark II in place of the Canon’s supplied top helmet. It gives you multiple ¼" 20 and ⅜" 16 mounting screw holes to which you can securely attach a variety of accessories. The Helmet attaches to the camera via 4 screws, one screw on top and three additional screws on the sides, mounting it firmly in place. Longer screws for attaching the helmet to the camera body are included. There are also spots on the helmet to accommodate the Canon microphone holder as well the ability to add a riser in the front to accept rods.