DIN 6921 Hex Flange Head Bolt A flange bolt is an important type of bolt that consists of two main components: a hexagon head and a flange. The hexagon head includes an integrated gasket underneath it, while the screw is a cylinder with an external thread
Our balance bike specially designed for children can improve the balance ability of novice children and reduce the possibility of falling, thus achieving a seamless transition from balance bike to pedal bike.