Greenlee Slug-Buster Manual Knockout Set

Greenlee 7237BB Slug-Buster® 1-1/2" - 2" Manual Knockout Set

The Greenlee 7237BB Slug-Buster® Manual Knockout Set is a professional-grade punch kit built for punching clean, round holes in mild steel, aluminum, brass, copper, fiberglass, and plastics. This set covers 1-1/2" - 2" conduit size knockouts (hole size 0.89" - 2.42" or 22.5 mm - 61.5 mm) and is rated to punch up to 10 ga mild steel. Made in the USA, the punches, dies, and carrying case are engineered for electricians and panel fabricators who need dependable, repeatable knockouts on the job site.

Key Features

• Trade Size: 1-1/2" - 2" conduit size dies for standard electrical box and enclosure knockouts.
• Slug-Buster® Punch Profile: Splits slugs for fast, easy slug removal after punching.
• Durable Construction: Punches, dies, and case are manufactured in the USA and rated to punch up to 10 ga mild steel.
• Ball-Bearing Draw Studs: Includes both a 7/16" and a 3/4" ball-bearing draw stud for smooth, low-friction operation.
• Easy Threading: Draw studs feature a "dog point" tip that helps eliminate cross-threading during setup.
• Precision Alignment: Laser markings allow quick part identification while alignment markings improve punching accuracy.
• Ergonomic Grip: Knurled edge on punches provides a better grip for controlled operation.
• Ratchet Wrench Compatible: Works with the Greenlee KRW-1 high-leverage ratchet wrench for driving punches.

Technical Specifications

• Country of Origin: United States
• Type: Manual Knockout Set
• Consists Of: 1-1/2" - 2" conduit size Slug-Buster® punches
• Material: Punch up to 10 ga mild steel
• Size: 1-1/2" - 2" conduit size knockouts (hole size - 0.89" - 2.42" or 22.5 mm - 61.5 mm)
• Shape: Round
• Case: Includes KCC-BB2 carrying case for organized storage and transport

Typical Applications

• Punching Round Knockouts in Electrical Enclosures and Panels
• Fabricating Holes in Mild Steel, Aluminum, Brass, and Copper
• Cutting Openings in Fiberglass and Plastic Enclosures
• Electrical Panel and Switchgear Modification
• Field Installation of Conduit Fittings and Connectors

Why Greenlee?

Greenlee's Slug-Buster® 7237BB knockout set is engineered and manufactured in the USA, pairing hardened punches and dies with a proven slug-splitting punch profile that simplifies cleanup on every hole. The dog-point draw studs, knurled grip surfaces, and laser-etched alignment markings reflect the kind of durable, precision-focused construction electrical professionals rely on for consistent, code-compliant panel work.