قابل للتعديل عجلة التدريب

FUNCTION: Provides Kids bike the balance and give your child to ride with freedom and confidence., APPLICATION: Fit All Kids' Single Speed Bicycles from 16 or 21 inch(Cannot Be Installed On Bikes with Derailleurs)., SPECIFICATIONS: Wheel Diameter: 10.2 cm, Width: 2.8 cm; Steel Bracket Arms Length: 8.5cm + 15cm, Width: 3.1cm; Weight: about 703g., HIGH-QUALITY MATERIAL: High-quality ABS wheels and stainless steel bracket arms with thickness at 3.3mm. Bring more security and stability to early rider., PACKAGING NOTE: Our training wheels set is not included the 5 pcs NUTS, and our product don't need addition nuts to be installed. Before installation please just take off the nuts from your bike.