... quality control 2,low friction coefficient 3,various sizes and types 4,made-to-order service available type1 metric---pin ... ,Round degree: 1. 27um,Material: GCr15, 9SiCr, tungsten steel and other materials.FormThe appearance of the form: smooth pin gauge, pin gauge ... , wooden box set, tin sets, single intubation, intubation sets….And can design packaging according to customer requirements. If you have ...