Welcome to our store! The DB9 core connector is a practical and widely used accessory for communication equipment. It is specifically designed to fit DB9 serial ports such as RS232/485/422 communication equipment. With its exquisite craftsmanship and industrial control compatibility, it is suitable for various applications including PLC, access control, touch screen, programmer, and data conversion. This DB9 core connector is made of high-quality materials to ensure durability. The insulation material is made of PBT + 30% glass fiber, while the pin material is brass. It is built to strict quality control standards and designed for enhanced durability. In this package, you will receive 20 DB9 core connectors and 20 DB-9 core connectors. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the item, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.