1. Do not use screwdriver or any sharp tools during installment, to avoid cracking tube or tyre. 2. Please check the air pressure regularly, make sure the tube is under standard pressure all the time, do not inflate too high or two low. Instruction of installment: 1.Make sure inner tube match with the size of tyre, check and exclude unusual factors of tyre and steel etc. 2. Inflate a little air before installment, or removye the valve core, to avoid crack or damage during installment. 3. Install the valve correctly, which must be 90 with steel, and the nut must be well locked. 4 Atter installment. please check the tube is at the right position between steel and tyre, make sure the tube are not camped by them. Then inflate the air according to pressure standard of tyre. 5. Slowly lock the valve core. Make sure the valve core have no leaking, and then screw valve cap. ____________________________________________ Can Whatsapp / Call . https://wa.me/60126960321 Vince . https://wa.me/60126105929 Shop . office 03-8060 8967 Operation Hour Monday to Saturday (10.30AM TO 7PM) Sunday Close ---------------------------------------------------------- SANTA CRUZ (VK CYCLES PUCHONG) Map - https://goo.gl/maps/8y79tAyzkEE2 (LOCATION) No 39, Jalan BP 7/2 , Bandar Bukit Puchong, 47100, Selangor , Puchong Facebook - https://www.facebook.com/SpecialistRepairBicycles/ Instagram - VK CYCLES PUCHONG Buy on shopee: VK CYCLES PUCHONG https://shopee.com.my/product/78112047/19193301193/ Buy on LAZADA: VK CYCLES PUCHONG https://www.lazada.com.my/products/i3798478990.html?spm=a1zawi.24863640.table_online_product.1.4d784edftuT1pG Buy on Tiktok: VK CYCLES PUCHONG https://shop.tiktok.com/view/product/1729487478436431030?region=MY&locale=en