... 2.Color,AB,AC,SN,black,white,golden or customized 3.safety,good sliding 1.Tube style:plain tube,three lines twist ... ,cross twist tube2.diameter:16mm,19mm,22mm,25mm,28mm,30mm 3.thickness:0.5mm,0.6mm,0.7mm,0.8mm,0 ... .9mm,1.0mm 4.Length:3m,3.5m,4m,4.5m,5m,5.5m,5.8m or ...