An applicator tool made to help insert internal threaded flat back jewelry with steadier control. Choose the size that matches your Oumo jewelry material, then use the tool to guide the flat back post through the piercing more easily. Helpful for hard-to-reach piercings and tiny flat back posts.Specifications Tool Type: Internal threaded flat back applicator Best For: Internal threaded flat back posts Size Option: 0.9 x 1.2mm fits Oumo titanium pieces Size Option: 1.0 x 1.2mm fits Oumo stainless steel pieces Tool Kit Option: Includes both 0.9 x 1.2mm and 1.0 x 1.2mm sizes Gauge: 16g Material: Stainless steel Jewelry Included: No, tool only Final Sale: For hygiene reasons, piercing tools are final sale