1. ADJUSTABLE DESIGN: The training wheel arms have holes on both sides for easy adjustment, you can adjust to different holes to fit your bike size. 2. FITS BIKE SIZES: These heavy-duty bicycle training wheels are well-made and highly compatible, making them suitable for children's bikes from 18 to 24 inches. 3. DURABLE AND LONG-LASTING: With a high-quality steel frame and puncture-proof rubber tires, the wheel is durable, wear-resistant, and has a long service life. 4. SUITABLE FOR BEGINNERS: Bicycle-assisted training wheel, compact structure, provides more safety and stability for beginners to learn to ride a bike. 5. EASY TO INSTALL: Our bicycle training wheels attach quickly and easily to your child's bike, helping them learn to ride until they develop good balance on the bike. Item Type: Bicycle Training Wheels Material: Steel + Plastic Weight: Approx. 1069 g / 37.7 oz Load Capacity: Approx. 100 kg / 220.5 lb 2 x wheels 2 x brackets 11 x Accessories