New: see picture 1 from left: The stainless steel pony mount is designed to use with 171mm to 184 mm diameter primary cylinders and for 100 mm to 110 mm diameter pony cylinders. It can be fitted to the primary cylinder with your  BC tank belt. (not included). Rubber feet will protect your cylinder against scratches. MANUAL

picture 2: Nautec Microfilter

picture 3: tank carry handle  - easy to mount with valve attached

picture 4: deluxe carry handle - for assembly valve must be detached.