We design and produce various  series of  spring ball plungers, press-fit  ball plunger, standard plunger, hexnose plunger,  stubby plungers and ball transfer units  etc, including   metric or inch, steel or stainless steel, threaded or unthreaded etc Theses high- precision  components  function as  positioning, indexing, holding and ejecting , applied in molding industry, automatic industry etc.