First, we’re real manufacture-factory, please see the photos of our work-shop and all kinds of molds ! Choose us as your partner, you could get the advantage of quality, price, delivery time at the same time. Please feel free to contact with me or leave me a message. Thank you ! Sizes of carbon fiber tubes The Mini out diameter is 2.3mm The thinnest wall thickness is 0.3mm Tolerance could be reached +/-0.05mm The exact surface or length is all up to your exact need Performance: Light weight – Less Density – 20% of Steel High strength and Perfect Surface High UV and Corrosion Resistance Superior and Precision Dimensional Stability provide adjustment freedom from dead corner,Quick vision Locating ,suit to record video and photography, recessed test level compass,quick insurance system board device,design of a flying wing type Center Column , it set groove by rotating,the locking button even more save effort , convenient to adjust the center column height, the rotating lock method, structural design of pins linkage,more smooth for operation.