Features: Superior quality nails, to be suitable for use with automatic fasten machine, perfect finish, without impurity, seizing free. Specification: 1. Precision: maximum 1,000ppm (10 in 10,000pcs) Minimum 500ppm ( 5 in 10,000pcs) 2. Low carbon wire. 3. Oval head, screw ring shank, diamond point 4. Finish: Electro galvanized 5. Taiwan origin