Description: 1. Features: To keep children safe, the wheels are equipped with 3 colorful LED lights, which can make the process of learning to ride a bicycle safe, fun and enjoyable. Installation is quick and easy, and only takes a few minutes. 2. Function: No slip, wearr-esistant, provide stability, help children ride bicycles. Let the children enjoy the fun of riding a bicycle. Make sure your child is safe when learning to ride. The best start for your child to get balance and confidence on two wheels. 3. Material: The wheel is made of PVC, and the 5-spoke rim on the steel bearing can reduce noise, reduce vibration, improve traction, and has abrasion resistance, which will be safer and more stable for beginners. 4. General: The size of the auxiliary wheels is adjustable, suitable for 12-20 inch children's single-speed bicycles. 5. Easy to install: Includes everything you need to install. Easy to install and can be adjusted individually. Specification: Product Name: Bicycle Training Wheel Color: Red, green, blue, black, pink Material: PVC+steel Wheel diameter: About 120mm/4.72 inches Type: 12-20 inch universal The Package Includes: 1 Pair x Bicycle Training Wheel 2 pieces x Screws 2 pieces x Nut 2 pieces x Gasket 2 pieces x Positioning Piece 2 pieces x BracketThe Package Includes: 1 Pair x Bicycle Training Wheel; 2 pieces x Screws; 2 pieces x Nut; 2 pieces x Gasket; 2 pieces x Positioning Piece; 2 pieces x Bracket. General: The size of the auxiliary wheels is adjustable, suitable for 12-20 inch children's single-speed bicycles. Wheel diameter: About 120mm/4.72 inches. Function: No slip, wearr-esistant, provide stability, help children ride bicycles. Make sure your child is safe when learning to ride. The best start for your child to learn balance and confidence on two wheels. Bicycle Training Wheel: To keep children safe, the wheels are equipped with 3 colorful LED lights, which can make the process of learning to ride a bicycle safe, fun and enjoyable. Easy to install and can be adjusted individually. Material: The wheel is made of PVC, and the 5-spoke rim on the steel bearing can reduce noise, reduce vibration, improve traction, and has abrasion resistance, which will be safer and more stable for beginners.Vehicle Service Type: Bicycle,Bike. Item Weight: 0.31 Kilograms. Pitch Circle Diameter: 120 Millimeters. Material: Polyvinyl Chloride. Brand: DENPETEC. Size: Free size. Included Components: Not null. Batteries required: No. Diameter: 12 Inches. Best Sellers Rank: #139,858 in Sports & Outdoors. Customer Reviews: 4.0 out of 5 stars 24 ratings 4.0 out of 5 stars. Country of Origin: China. : B09HH9VH3X. Manufacturer: DENPETEC. Department: Unisex-adult. Item Weight: 10.9 ounces. Product Dimensions: 8.66 x 5.91 x 0.28 inches.