Enamel pin backs locking mechanisms are essential for anyone who wants to keep their pins safe and secure. Our locking pin clasps with wrench offer a reliable way to fasten your pins to any fabric surface. The metal pin backs are designed to withstand daily wear and tear, making them ideal for long-term use. To use, simply attach the pin to your desired location, tighten the clasp with the wrench, and rest assured that your pins are securely in place. Features -Color:Silver -Material:Stainless steel -Size:4.60X1.60X0.20cm/1.81X0.63X0.08in -Size:0.90X0.60X0.60cm/0.35X0.24X0.24in -Easy operation: the locking pin clasps with wrench are designed for simple and quick tightening or loosening of screws, improving efficiency. -Versatile applications: these pin backs are suitable for a variety of metal fittings and clutch interfaces, providing broad usability. -practical and sturdy: made from sturdy stainless steel, these pin backs are resistant to wear and tear, ensuring they last for a long time -Secure fastening: the locking mechanism ensures that screws remain securely fastened, preventing them from loosening or falling out -Compact and portable: the lightweight and compact design makes these pin backs easy to carry and use in different environments, from home repairs to automotive maintenance Package list: 20 x locking pins 20 x pin backs 2 x wrenches