Premium tool steel construction: Crafted from high-grade tool steel for exceptional mechanical strength, durability, and smooth operation, ensuring a secure and tight seal in every use. Adjustable safety features: Includes an adjustable nut position for enhanced user safety and 16 hardened jaws that provide a reliable, wrinkle-free seal, offering consistent performance across applications. Durable and precise design: Features a precision-machined chassis made from 45 steel and 16 claws of quenched tool steel, delivering impressive hardness, wear resistance, and toughness for long-lasting use. Customizable size options: Designed for international 200L (53 gallon) oil drum caps, with two size options to fit cover diameters of 70mm or 35mm, ensuring a proper fit for various needs. Versatile application range: Ideal for multiple packaging tasks in industries such as manufacturing, barrel making, lubricants, coatings, chemicals, and petroleum products, providing broad utility.