SECURE & STABLE CONNECTION: Made from high-quality carbon steel and coated with zinc to prevent rust and , the Square Coupler Pin provides a secure and stable connection for trailers, equipment, and other fixed cargo. EASY INSTALLATION: With its 360°rotating pin, the trailer coupler pin set can be easily inserted into the groove during installation. Its user-friendly design makes installation a breeze. VERSATILE USAGE: The trailer hitch pin is suitable for applications, including agriculture, gardening, trucks, boats, trailer couplers, and trailer jack wheels. Its versatility makes it a must-have for multiple purposes. QUANTITY & VALUE: Each package of the shaft locking pin contains forty pieces, offering for money. With such a generous quantity, you'll have enough pins for all your connection needs.<br><br>Color:As Shown Material:Metal<br><br>Package Contents: 40 * Square Coupler Pin<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.