SuperWeldâ„¢ Extreme is a specially formulated Super Glue that provides a strong, flexible bond and cures in 24 hours. SuperWeldâ„¢ Extreme has a precision tip, no drip formula and is ideal for both vertical and horizontal surfaces! SuperWeldâ„¢ Extreme is impact resistant and has a flexible bond allowing it be great for plastics, leather, rubber, glass, metal, and more!