【PACKAGE INCLUDE】2 Pack 12'' x 1.75/1.95/2.125 Bike Tubes & 2 Tire Levers 【TUBE SIZE】Fits most kids bikes on the market with 12’’ tires that are between 1.75’’ to 2.125’’ wide. 32mm Schrader (Regular valves) 【WIDE APPLICATION】This 12inch bike inner tube can fit RoyalBaby, Schwinn Elm/Koen, Dynacraft, JOYSTAR and COEWSKE 【HIGH QUALITY】Our bike tire tubes are made from high-quality butyl rubber, it has better air tightness and heat resistance, and is durable 【NOTE】Make sure inner tube match with the size of tire; Inflate a little air before installment, to avoid crack or damage during installment; Install the valve correctly, which must be 90° with steel, and the nut must be well locked; After installment, please check the tube is at the right position between steel and tire, make sure the tubes are not clamped by them; Then inflate the air according to pressure standard of tire

Make sure inner tube match with the size of tire; Inflate a little air before installment, to avoid crack or damage during installment; Install the valve correctly, which must be 90° with steel, and the nut must be well locked; After installment, please check the tube is at the right position between steel and tire, make sure the tubes are not clamped by them; Then inflate the air according to pressure standard of tire