Wear-resistant and Thicker Wheel Design These practical 3mm thicker bike training wheels add the reinforcement clip to build the sturdy triangle design. This helps learners develop a useful sense of balance on the bike. Avoid children worrying about the bike wrestling High quality High quality ABS wheels and high quality steel support arms. Our support arms for support wheels are 3.0 mm thick. For beginners. this means more security and stability.Non-slip and quiet Our bike trainers are made of metal. made of high quality plastic and rubber. They have the function of being non-slip and silent. so your child can be safer and smoother when riding without having to worry.Easy installation Our training wheels are easy to install and offer a wide range of accessories. so you can allow your child to use the bike safely by simply installing a training wheel with support.Universal and adjustable Stabilizers fit the thumb of the bike at speeds from 12.14.16.18.20 with a rearward pointing horizontal fork end. but not suitable for people with semi-horizontal or vertical legs. Cannot be installed on bicycles with derailleurs.