This sealing equipment are mainly made of tool steel in excellent quality, with the advantages of reasonable structure & tight sealing heavyduty easy operation Users only need to adjust the position nut before usingBoth with 16 hardened jaws give unrivaled security and wrinklefree sealing This tool is widely used in CapMaking drummaking canmaking lubricant and paintmanufacturing Chemical Petroleum grainoil and other liquid packaging industries, Manufacturer: CVFRDD