Greenlee 721-12P Slug-Buster Round Replacement Punch

Greenlee 721-12P Slug-Buster Round Replacement Punch, 1/2 Inch Size

The Greenlee 721-12P is a Slug-Buster replacement punch built for the 1/2" conduit size punch unit. This round replacement punch produces an actual hole size of 7/8 IN (22.500 MM) and is rated for mild steel capacity up to 10 GA (3.500 MM), making it a dependable component for electricians who rely on Greenlee's Slug-Buster knockout punch system for clean, accurate conduit-size openings in panels and enclosures. Manufactured in the United States, the 721-12P is designed as a direct replacement part, so it drops into your existing Slug-Buster punch unit setup without modification. Alignment markings on the tool improve punching accuracy and productivity, helping installers line up each cut quickly and consistently, while clear part identification markings on the punch and die make it easy to confirm you have the correct replacement component before installation. As a round replacement punch, the 721-12P is intended specifically for use with the 1/2" conduit size punch unit, giving contractors and maintenance crews a straightforward way to keep their Slug-Buster system in service without purchasing an entirely new punch and die set.

Key Features

• Trade Size: Designed for the 1/2" conduit size punch unit, producing an actual hole size of 7/8 IN (22.500 MM).
• Type: Replacement, round punch for quick swap-in service on compatible Slug-Buster punch units.
• Capacity: Rated for mild steel up to 10 GA (3.500 MM) for durable, code-compliant knockout work.
• Alignment Markings: Clearly marked alignment guides improve punching accuracy and overall productivity on the job.
• Part Identification: Punches and dies are clearly marked for quick, confident part identification during replacement.
• Country of Origin: Made in the USA for consistent manufacturing quality.

Technical Specifications

• Country of Origin: United States
• Size: 7/8 IN (22.500 MM) Actual Hole Size
• Type: Replacement, Round
• Sub Brand: Slug-Buster
• Capacity Mild Steel: 10 GA (3.500 MM)
• Shape: Round

Typical Applications

• Replacement Component for 1/2" Slug-Buster Conduit Size Punch Units
• Panel and Enclosure Knockout Punching
• Mild Steel Conduit-Size Hole Punching in Electrical Panels
• Electrical Contractor and Maintenance Toolkits

Why Greenlee?

Greenlee's Slug-Buster line is built for electricians who need reliable, precisely marked punches and dies that keep production knockout work fast and accurate. With alignment markings for improved accuracy, clear part identification, and mild steel capacity rated to 10 GA, the 721-12P replacement punch is manufactured in the United States to support dependable, code-compliant conduit-size punching in professional electrical installations.