Orthodontic Crimpable Hooks all of our sliding hooks are made from fine medical stainless steel,small,middle ... and large size. Orthodontic Crimpable Hooksall the sliding hooks are made from fine medical stainless steel, and the ... types of the hooks are : open surgical hooks, short crimpable hooks, Long crimpable hooks,long curved crimpable hooks,etc.. orthodontic material Sliding ...