2019 MTB Dropper Seatpost External Cable Routing Allows this to fit older bikes without internal wiring as well as new bikes.100MM of Travel Available in seat post sizes of 30.9 and 31.6 X 385 MM Includes remote wire controlHigh-strength aerospace aluminum alloy tube, 100mm travel, standard clamp with 2-bolts ensure safety in riding. Zoom is a professional bike component manufacturer from Taiwan with high quality products. No 1 market share in global products! Features: Brand: ZOOM, from Taiwan Type: External Routing, remote wire control Material: Aluminum 7050 alloy Travel distance: 100MM Diameter: 30.9mm, 31.6mm Length: 385mm Weight: 650g Cable length: 150cm Off set: 0 Surface treatment: Sandblasted matte anode, black Mechanism: air pressure About Zoom HL CORP was founded in OCT1991 is a Taiwan investment CO., LTD. The company create famous brand ZOOM in the world with good quality, punctual delivery, reasonable price, outstanding goodwill, enjoying good reputation in the industry. HL CORP products are exported far to Europe, USA, mainland CHINA, ASIA. Its R&D, manufacturing and sales are in the leading positions in the industry. Zoom Bicycle handlebar, stem, seat pillar and suspension forks ranked top 1 in the global market share. 2007.1 HL listed in Shenzhen stock exchange. View more great items