DescriptionThis item is Heavy Duty Training Wheels for Kids Bicycle It will help aid your child learn to ride a bike without falling over Besides, it can improve your child's safety and confidence with no need to hold the back of the saddle Features- Color: Silver, black - Material: Metal, rubber - Wheel Size: Dia 12 8 x 2 4cm/ 5*0 9" - Bracket Size: 21 x 7 5 x 2 9cm/ 8 3*3*0 8"(Lx W x H) - Style: Universal - Feature: Adjustable - Gender: Children - Wheel Quantity: 2 PCS - For Wheel Size: 12"/ 14"/ 16"/ 18"/ 20" - Function: Training, Bike Balance - Easy assembly - Pls note that due to the difference between different monitors, the picture may not reflect the actual color of the item Packing list1 * Universal Heavy Duty Training Wheels for 12/14/16/18/20inch Bike Kids Children