1.Eco-friendly material; Excellent quality& resonable price 2.1P&2P outer casing 3.1x7,1x12,1x19,7x7,7x19,19x7 inner cable Bicycle outer casing:1.2P type&SIS type straight wire outer casings;2.CW type braided outer casings;3.SP type straight wire outer casings;4.1P,2Ptype transparent outer casings;5.Laser outer casings;6.Length & color following customer's demand