Located in Shanghai, China, with abundant experience, we specialized in manufacturing Plastic strip screws(Autofeed Collated Plastic Strip Screws): -Finish:coating ; black phosphate; gray phosphate; yellow or white galvanized . -Diameter:6 Ga to 14 Ga(5.0mm to 2mm) . -Length:25 to 75mm. -Material: steel -Head type: bugle head -Recess: Phillips #2 -Can be applied to plasterboard. Welcome your specific inquiry, We will offer you products with high quality & competitive prices. Pls contact Mr. Ren.