PROTOTYPE OPTION Ball Head for OD Canister - Hiking/Mountaineering I purchased this from the official website, but I haven't had a chance to use it. It's lightweight and doesn't take up much space, so I think it's useful to have on hand for various purposes. *Camera and OD canister not included. [Product Description] *Includes Ultra Light Ultra Compact Ball Head (Center of gravity load 3kg, Off-center load 600g) Width: 32.3mm x Height: 42.4mm Weight: prop02=9g ballhead=23g Material: A6063, Anodized *Only the core of the ball head dial is stainless steel screw Please use the product according to your own ideas. I hope it will be useful in situations such as hiking, camping, etc. prop02 is an adapter that converts the valve screw of an OD canister to a 1/4 screw used for cameras, etc. For safety reasons, the design has a hollow top to prevent contact with the valve of any OD canister (※Photos 6 and 7 are cross-sectional cuts). When viewed from above with the screw attached, there are eight holes, designed to prevent a vacuum from forming even when the screw is attached to the OD canister. Also, it is manufactured in a factory that only produces camera peripherals, using materials used in aircraft, etc.