The Cardellini Threaded 3/8-16 has a baby pin on one end. Just like an End Jaw & Center Jaw combined. It makes a great "mag clamp". The Jaw measures 3" in width, can open to 4", the shaft is 9 inches long, and it only weighs 22 ounces.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov