[Package Include: 1 pair of pink training wheels 2 universal legs a bag of screw and nut accessories 1 car bell and 2 installation tools. "Easy to Install: included installation instructions and mounting hardware you can adjust the size to fit your children riding needs." Superior Quality: The bike training wheels crafted from high-quality plastic and rubber materials offering excellent anti-slip and wear-resistant properties that provide children with great Fitting type: Fits most single-speed bikes from 12-20 inches with a horizontal rear-facing track fork end but is not suitable for those with semi-horizontal or vertical dropouts. CANNOT be used Warm Tip: Please check that the training wheels are correctly installed. ensure you have an adult present for safety when using them!]