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The GREENLEE 12099 is a knockout punch ball bearing adapter screw. It saves time and ensures accuracy with its self-centering punch that aligns itself on the pilot hole. There is no need to draw crosshairs or line-up die alignment marks. Its unique, patent pending punch profile also splits slugs for easier slug removal.
The GREENLEE 12099 adapter screw is for use with 7361SB knockout punch kits and ratchet punch driver kits.
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