This threaded funnel screws on to prevent wobbling and spills. It has dual threads that fit on both 24mm and 28mm necks, so it works for almost all 4 to 32 ounce bottles.

Specifications:

• Polypropylene construction
• Wide opening prevents spills
• Dual threads - 24mm and 28mm necks
• Screws on neck to prevent wobbling
• Built-in hook so funnel can hang on bottles