Double Third Hand Base With Soldering Board For Soldering Jewelry. This is a new double third hand base with soldering board. The grey transite board measures approximately 6" x 6" (152 x 152 mm). The third hands makes precise soldering easy by holding parts in the exact position. With unequaled flexibility this third hand can twist, rotate and bend in all directions. This convenient package helps reduce bench clutter and makes soldering easier and faster. It measures approximately 9" x 6" (228 x 152 mm).