Greenlee 7308 Knockout Punch Kit - Reconditioned - 7308
Slug Splitter SC knockout set kit includes 2-1/2, 3 and 4 In knockout punches for use in up to 10-gauge stainless steel
Self-centering punch aligns on pilot hole
No need to draw crosshairs or line up die alignment marks
Draw stud, adapter and case included
What our Experts Think
Q&A
Q: What is the Greenlee 7308 Knockout Punch Kit used for?
A: A heavy-duty Slug-SplitterĀ® SC knockout kit designed to punch clean, accurate holes in electrical panels and enclosures for conduit sizes 2-1/2", 3", and 4".
Q: What makes the 7308 kit different from standard knockout sets?
A: It uses a self-centering Slug-Splitter design that automatically aligns on the pilot hole, reducing setup time and eliminating the need for manual alignment marks.
Q: What materials can it punch?
A: Rated for punching up to 10-gauge stainless steel, and also suitable for mild steel, fiberglass, and plastics in electrical enclosure work.
Q: What sizes are included?
A: Typically includes punches and dies for 2-1/2", 3", and 4" conduit openings, plus draw stud, adapter, sleeve, and carrying case depending on configuration.
Q: What tools is it compatible with?
A: Works with battery-powered, hydraulic, or ratcheting drivers, making it flexible for field or shop use.
Q: What are the key benefits?
A: Faster punching, cleaner cuts, reduced alignment errors, and durable performance in heavy-duty electrical panel fabrication.
Q: What does āreconditionedā mean?
A: A reconditioned kit has been inspected, tested, and restored to working condition, with possible cosmetic wear but fully functional performance maintained.
Maintenance Tips
- Clean punch, die, and draw stud after each use to remove metal slug and debris
- Wipe all components dry to prevent rust and corrosion buildup
- Inspect punch and die cutting edges regularly for cracks, chips, or dulling
- Apply light oil to threads and draw stud to ensure smooth operation
- Keep die surfaces aligned and free of dirt before every punch cycle
- Store kit in its case to prevent impact damage and tool misalignment
- Check hydraulic compatibility (if used with a driver) before operation
- Remove slugs promptly to avoid jamming or misalignment issues
- Inspect reconditioned components for uneven wear or stress marks
- Tighten all fittings and adapters securely before use
- Avoid using damaged punches or dies to maintain clean hole quality
- Keep kit dry and clean to reduce oxidation and extend tool life
- Use only compatible Greenlee dies, punches, and draw studs
Damage 
Loss 
Theft 
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