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- Shaft: 5/16" (8mm).
- Hole Diameter: 1/4" (6mm).
- Length: 8.3/4" (220mm).
Sharp hollow-ground punch easily pierces the thickest grommets. Hole in handle and punch allows for easy feeding of wire through tool and the grommet.
Use for installation of radios, alarm systems, cellular phones, heavy gauge wiring, etc. Punch design allows hole to re-seal when punch is removed.