Greenlee Slug-Buster Replacement Punch — 0.803 in.
The Greenlee 721E-20.4 is a replacement punch for the Slug-Buster knockout system. Constructed from mild steel and designed to cut 0.803-inch holes in material up to 14-gauge mild steel, this punch is a direct replacement for worn or damaged punches in the Greenlee Slug-Buster lineup.
Features
- Mild steel construction for durability
- 0.803 in. hole size
- Rated for 14 ga mild steel
- Direct replacement for Slug-Buster punch sets
Specifications
- Brand/Line: Slug-Buster
- Model: 721E-20.4
- Material: Mild Steel
- Product Type: Replacement Punch
- Hole Diameter: 0.803 in. (20.4 mm)
- Capacity: 14 ga Mild Steel
- UPC: 78331031971
Applications
Used with Greenlee Slug-Buster knockout systems to punch clean holes in electrical enclosures, panelboards, and metal boxes. The 0.803-inch punch size is a common standard for various conduit and cable fittings.




