Features Metal and Silicone: Combining premium metal and silicone materials, the capping bit is not likely to break, and very durable for long work. Good Sealing: The silicone pad ensures waterproof and leakage free capping, which will better facilitate the bottle sealing for after using. Precise Size: The capping head is precise manufacturing processed, with accurate shank size, can connect to the machine perfectly. Simple to Install: Designed to have a compact size and a light weight as well, the convenient installation can be quickly completed. Wide Matching: Suits perfectly for sealing various bottle covers from 10mm to 20mm, the capper bit enables a wide range of application. Specification: Item Type: Electric Capping Machine Bit Material: Metal, silicone. Cover Diameter: Approx. 10 ~ 20mm / 0.39 ~ 0.79in Bottle Height: Unlimited Silicone Pad Outer Diameter: Approx. 40mm / 1.57in Silicone Pad Height: Approx. 17mm / 0.67in Work: Used together with automatic bottle capping machine.  Package List: 1 x Electric Capping Machine Bit Note: 1. Suitable for various bottle covers.2. Measure the size of bottle cover before purchase. Package List 1 x Electric Capping Machine Bit