Cool Cup, Soldering Cup, with Tweezer | SOL-700.00 Uses - This product is designed for, but not limited to, soldering rings when re-sizing. Simply fill the cup with cold water and submerge the stone and mounting while soldering the shank to keep the stone cool. This soldering accessory is a very handy tool for virtually any jeweler. Instructions are included. Specifics - This soldering cup comes with instructions for safe use and special-sized negative locking tweezers that have been designed to slip on and off a post attached to the cup. The cup measures 4 in diameter and 1.75 in height. The stainless steel tweezers measure 5.5 in length and are pointed at the tip. Superior Quality - EURO TOOL products are the pinnacle of quality, and stand alone at the top in the industry of craft, hobby, DIY project and jewelry tools. Make sure your tools have the name EURO TOOL.