This precision machined, aerospace quality screw top is manually machined from solid copper, and is guaranteed to keep your copper flask of choice looking as sharp as possible. Like all Jacob Bromwell® copper products, each screw top proudly features our proprietary SuperPolish™ finish and is basked by our ironclad lifetime guarantee.
Aerospace quality, precision machined screw top.
Our aerospace quality, precision machined copper screw top which guarantees a 100% leak-free flask every time you fill it. Twist, sip, enjoy.
Copper is an investment for life.
Copper is sky-high on the commodities market today, and there are up to five red-blooded artisans involved in the creation of this copper machined screwtop. Every step in our proprietary manufacturing process is done entirely by hand.