2 Third Hand Bases & Ceramic Ring Stand For Soldering Jewelry Double Third Hand Base. This is a new double 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. Third Hand Base. This is a new third hand base with a pair of tweezers. This handy work holder features a single 6 1/2" (165 mm) long pair of tweezers. It is mounted on a weighted base to hold items stable and secure in any position while soldering. This allows users to have both hands free while working. It measures approximately 2 1/2" (62 mm) in diameterCeramic Ring Stand. It is mounted on a base with a swivel to provide the exact position or angle desired. This comes with a 6" (152 mm) ceramic rod. The clamp releases the rod for replacement. It measures approximately 2 1/2" (62 mm) in diameter.