The Really Right Stuff Versa Series 4/3/2 Hook RRS-9000412 is a durable accessory designed to enhance the stability and convenience of your tripod. This hook allows you to add weight for increased mass, especially in windy conditions, ensuring your tripod remains stable. Made from aircraft-grade aluminum, it is compatible with all Versa Series 4, 3, and 2 tripods, making it a valuable addition for photographers seeking added stability. Really Right Stuff Versa Series 4/3/2 Hook RRS-9000412 in Black