XtraArm Tripod Arm w/ Ball Head Adapter Black. The included 3/8''-16 adapter screws directly onto your tripod allowing you to mount the XtraArm system securely and transform your tripod into a fully adjustable platform. With the articulating arm you can position your setup at virtually any angle with precision. The Ballhead Adapter features a standard 3/8''-16 stud allowing you to mount your own ball head for maximum flexibility and control. Its also an excellent tool for filming giving you smooth precise camera positioning in the field. This setup delivers exceptional mobility and adaptability whether you're behind a camera lens or a rifle scope. Specifications for XtraArm Tripod Arm w/ Ball Head Adapter: Manufacturer: XtraArm Color: Black Fabric/Material: Aluminum Package Contents: XtraArm Tripod Arm w/ Ball Head Adapter XtraArm XTRA-TABHA: Tripod Arm w/ Ball Head Adapter Black