Introducing our high-quality {Black grade 12.9 DIN 912 Cylindrical Socket cap screw/Allen bolt}, produced and manufactured right here in our factory. Our screws/bolts are designed with durability and precision in mind, consisting of a black finish and a grade 12.9 strength material that exceeds industry standards. These cylindrical socket cap screws are perfect for those looking for a secure and reliable fastener that will withstand the test of time. Trust our experts to deliver the best screws and bolts in the market, with a commitment to customer satisfaction and excellence. Order yours today and feel confident in knowing you've made the right choice!