HIGH-QUALITY 18" X 2.125" KIDS BIKE REPLACEMENT TIRES AND INNER TUBES - Thick, heavy-duty, and dependable, this set of 2 tires and 2 tubes is perfect for school-age kids bikes, especially for girls’ bikes. With an expandable width that can accommodate 1.95-inch, 2-inch, and 2.125-inch tires, these inner tubes can withstand sharp impacts and minor punctures. The tires have distinct and thick tread that is perfect for rough riding on different types of surfaces. FITS MOST 18” KIDS BIKES WITH WHITE TIRES PERFECT FOR BOYS’ AND GIRLS’ BIKES - Highly compatible brands include Schwinn, JOYSTAR, COEWSKE, Royalbaby, Dynacraft, and more! Universally compatible, you can use these tire and tube sets interchangeably on various 18-inch kids’ bikes! EXTRA-THICK AND PREMIUM-QUALITY BUTYL RUBBER FOR MAXIMUM RIDING COMFORT - Upgrade your kid’s riding experience with high-quality inner tubes that have superior shock, impact, and vibration dampening capabilities. The thick, strong, and high-durable butyl rubber make of these inner tubes is the perfect damping material to reduce vibrations and dissipate shock caused by bumps and rough patches on the road or pavement. HEAVY DUTY INNER TUBES - Safety is our priority. CalPalmy aims to produce products that are safe and are of high-quality. That's why our range of replacement inner tubes are both tear-resistant and self-sealing to prevent huge punctures that can turn explosive. Protect yourself and your tires with our HEAVY DUTY inner tubes. MADE FROM BPA/LATEX-FREE PREMIUM-QUALITY BUTYL RUBBER - Rest your worries about rubber with harmful chemical additives. We at CalPalmy only produce high-quality and non-toxic replacement parts. Not only are these tires and inner tubes made from high-quality rubber, but they are also odorless, non-toxic, phthalate-free, BPA-free, and latex-free. A More Affordable Tire and Tube Replacement Branded bikes generally cost more than generic bikes. The same is true for OEM replacement parts. And if your replacement tires and tubes still get constant punctures and flats, it’s time to rethink your choices. Why not opt for more affordable replacement tires and tubes? The same quality, specifications, and even more durable! So, if your child owns any of these bike models, it’s time to switch to our exact replacement tires and tubes! ●Schwinn Koen 18” ●JOYSTAR Whizz Kids 18 Inch Boys and Girls Kids’ Bike ●JOYSTAR Pluto 18 Inches 2-9 Years Old Boys and Girls Bike ●JOYSTAR TOTEM 18 Inch Kids Bike ●JOYSTAR NEO 18 Inches Boys and Girls Kids Bike ●COEWSKE 18 Inches Steel Frame Kids’ Bike (Little Princess and Regular Styles) ●COEWSKE BMX Cycling Kid Bikes for Girls and Boys ●Royalbaby Space Shuttle Magnesium Allow 18 Inches Boys and Girls Kids’ Bike ●Royalbaby BMX Freestyle Pedal Brake 18 Inches Boys and Girls Kids Bike ●Royalbaby Honey 18 Inches Boys and Girls Kids Bike ●Royalbaby Buttons 18 Inches Kids Bike for Boys and Girls ●Royalbaby H2 Super Light Alloy 18 Inches Kids Bike ●Moto X Kid Bike Quick Connect 18-Inch ●Rock-It Boys’ EZ Build Bike 18-Inch ●Moto X Boys’ Bike 18-Inch ●Unleash Boys’ Bike 18-Inch ●Dynacraft Duzy Customs Skyquest 18” Bike ●Dynacraft Air Zone Gauge 18” Bike ●Dynacraft Hot Wheels 18” Bike ●Dynacraft Camo Decoy 18” Bike ●Dynacraft Everest Clutch 18” Bike ●Dynacraft Firestorm 18” Bike