Features 【Wide tuning】: fits perfectly for sealing various bottle lids from 10mm to 20mm, the cap bit allows a wide range of applications. Metal and silicone: Thanks to the combination of high-quality metal and silicone materials, the cover bit is not easy to break and is very durable for long-term work. 【Easy to Install】:Designed to have a compact size and light weight, easy installation can be completed quickly. Good sealing: the silicone pad provides a waterproof and leak-proof cap, which will better facilitate the bottle seal after use. Easier covering: work in conjunction with an electric cover machine, the cover bit allows efficient and labor-saving bottle sealing, very convenient. Specification: Item Type: Electric Sealing Machine Bit Material: metal, silicone. Lid diameter: Approx. 10~20mm/0.39~0.79inch Bottle height: unlimited Silicone Pad Outer Diameter: Approx. 40mm/1.57inch Silicone Pad Height: Approx. 17mm/0.67inch Work: used together with automatic bottle capping machine. Package List: 1 x Bit for Electric Sealing Machine Note: 1. Suitable for various bottle lids.2. Please measure the size of the bottle cap before purchasing. Package List 1 x Electric Capping Machine Bit