The Precaliber 20 7-Speed is a versatile kids' bike for young adventurers. It has a lightweight frame and quality components like a front suspension fork, 7-speed gearing and hand brakes that are perfectly sized to better fit small riders. For kids aged 6-8, between 129.5 - 149.8 cm (45-52?) tall. Precaliber 20 7-Speed is a versatile kids' bike for young adventurers. It has a lightweight frame and quality components like a front suspension fork, 7-speed gearing, and hand brakes that are perfectly sized to better fit small riders. For kids ages 6-8, between 45-5