Features Watertight and Leakproof Design: Special rubber pad inside the bottle capper bit for secure sealing to prevent water leakage, ideal for industries such as food, beverage, cosmetics, and pharmaceuticals. Automatic Bottle Hat Tightener: Ensures quick and effortless tightening of bottle hats with a lock buckle mechanism, suitable for hats with a diameter of 80 to 90mm. Improved Efficiency: Use this electric capping machine bit to enhances production efficiency and reduces labor strength for operators in the food, beverage, cosmetics, and pharmaceutical industries. Robust Structure: Made of metal and rubber, this hat tightener is robust and sturdy for a long service life, making it an ideal replacement for the old or damaged parts. Versatile Compatibility: This capping machine bit can be used with a variety of electric drills, pneumatic drills, and 6.35mm bit air screwdriver for efficient hat tightening operation. Specification: Item Type: Electric Capping Machine Bit Material: Metal, Rubber Hat Diameter: Approx. 80 to 90mm / 3.15 to 3.54in Bottle Height: No limitation Compatible with various sizes, can be used with electric drills, air drills, 6.35mm screwdriver bit air screwdriver How to Use: Please confirm the size before using directly. packing list: 1 x Electric Capping Machine Bit Package List 1 x Electric Capping Machine Bit