The N Series tripod is an excellent all-purpose model with many useful features not found in other tripod systems. By using high quality materials and designing the leg tubes to have only a 3mm difference in diameter for added stability. The N Series tripod has a unique leg mechanism that allows you to move the legs up 180deg.. This allows the tripod to be folded significantly smaller than comparably sized tripods with conventional leg designs. An added advantage is that you can keep a ball head on the tripod and it will still fit in the tripod case. In addition to being a high quality tripod, N Series tripods have the ability to be converted into a monopod! This is really convenient when tripods are not allowed or when you"re shooting in tight spaces. Features 1. Tripod converts to monopod. 2. Legs fold up 180deg. for extra compactness 3. The center column can be inverted for unusual low angle shots 4. For speed and convenience, each leg has an automatic leg angle lock mechanism 5. Short center column is supplied for low angle or macro shooting. 6. 3 position leg angle for uneven terrain The Sirui N-X Series tripods have all the features of the famous Sirui N-Series, with a few added conveniences. The new split center column makes changing from the standard center column to the short center column fast and easy. By unscrewing the hanging hook from the bottom of the center column, the column separates and the short center column remains on the tripod, ready to go! No need to remove the full-sized center column and replace it with the short center column. In addition to being a high quality tripod, N Series tripods have the ability to be converted into a monopod! This is really convenient when tripods are not allowed or when youÕre shooting in tight spaces. By attaching the larger portion of the split center column to the N-X series you can increase the height of the monopod.