Greenlee Slug-Buster Round Metric Knockout Punch Unit

Greenlee Slug-Buster Round Metric Knockout Punch Unit

The Greenlee Slug-Buster round metric knockout punch unit is designed for use with battery-powered, hydraulic, ratchet, or manual drivers, giving electrical contractors a versatile way to create clean, precise round metric openings in electrical enclosures, panels, and boxes. This punch family is available in punch diameters ranging from 30.5 mm to 54 mm, so installers can select the exact metric knockout size a job calls for while relying on the same proven Slug-Buster performance across the line. Every punch unit in this family uses standard Greenlee dies and draw studs, making it a straightforward addition to any electrical contractor's existing Greenlee punch system. Manufactured in the United States, the Slug-Buster line is protected under U.S. Patent #4,543,722 and is trusted by contractors worldwide for reliable, repeatable knockout performance.

Key Features

• Punch Diameter Range: Available in round metric punch diameters from 30.5 mm to 54 mm to cover standard metric knockout applications.
• Compatibility: Uses standard Greenlee dies and draw studs for seamless integration with existing Greenlee punch systems.
• Driver Versatility: Compatible with battery-powered, hydraulic, ratchet, or manual drivers for flexible use in the field.
• Unique Punch Profile: Splits slugs during punching for easier, faster slug removal and cleaner finished openings.
• Round Shape: Produces a precise round knockout suited for standard metric conduit and fitting applications.
• Patented Design: Slug-Buster technology is protected under U.S. Patent #4,543,722.
• Proven Worldwide: The contractor's choice for knockout punching on jobsites globally.
• Made in the USA: Manufactured in the United States for consistent, dependable quality.

Technical Specifications

• Country of Origin: United States
• Punch Diameter Options: 30.5 mm, 54 mm
• Type: Slug-Buster Metric Punch Unit
• Sub Brand: Slug-Buster
• Shape: Round

Typical Applications

• Punching Round Metric Knockouts in Electrical Enclosures
• Panelboard and Junction Box Fabrication
• Commercial and Industrial Electrical Installations
• Metric Conduit Fitting Preparation
• Field Use with Battery-Powered, Hydraulic, Ratchet, or Manual Drivers

Why Greenlee?

Greenlee's Slug-Buster punch unit family combines a patented punch profile with compatibility across standard Greenlee dies, draw studs, and multiple driver types, delivering reliable performance for professional electrical installations across the full range of available punch diameters. Manufactured in the United States and trusted by contractors worldwide, the Slug-Buster line is engineered to make knockout punching faster and cleaner, reducing slug removal hassle on every job, whatever size the task requires.