*1Pcs Cello Carbon fiber End pin. *The end pin cylindrical telescopic rod is made in the fine carbon fiber . *The end pin tail hole Screw nut is made in the carbon fiber. *The end pin Control telescopic rod’s screw is made in the carbon fiber. *The carbon fiber is very Light，but it is very strong and durable. *We are the manufacturer, can provide more size . if you have a need, please e-mail to contact me.