4 Cross Locking Tweezers Third Hand Base Jewelers Tool. Third Hand Base. This is a new third hand base. It has a weighted base for stability. This tool is great for holding jewelry in place while soldering. This allows both hands to be free while soldering. It measures approximately 2" x 2" x 3" (50 x 50 x 76 mm) 3 Cross Locking Tweezers. This is a new set of 3 pairs of cross locking tweezers. These have polished steel jaws and they are straight. These strong cross locking tweezers hold your work securely. They measure approximately 4 3/4" (120 mm) long. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.