Kool-Jool by Grobet Sale $29.80 | / SKU 54-468 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Kool-Jool Protects jewels from heat while soldering. No need to remove jewels from settings (except opals). If flame is used for soldering, the jewel will stay cool. Rinses off in plain water. 8 oz. jar.