The Photek TRI-X-2500 Tripod Extender adds a horizontal lateral arm to any standard tripod that has a 1/4"-20 or 3/8" mounting stud. It features a ball head with a quick-release plate. The Extender has a telescopic design and an overall length of 32", and shipping weight is 3.5 lb. For added stability it has a built-in counter weight inside the arm. I replaced the ballhead with a more compact and ligher one. All metal build. Here is the link I bought from: https://www.bhphotovideo.com/c/product/358106-REG/Photek_TRIX_2500_TRI_X_2500_The_Tripod_Extender.html