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Greenlee - 1-13/16 Inch Hole Length x 1-13/16 Inch Wide, Square, Knockout Punch Unit - 04224853 - MSC Industrial Supply
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Greenlee - 2-11/16 Inch Hole Length x 2-11/16 Inch Wide, Square, Knockout Punch Unit - 04224879 - MSC Industrial Supply
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Greenlee - 2-5/8 Inch Hole Length x 1.312 Inch Wide, Rectangular Punch Unit - 04225785 - MSC Industrial Supply
GREENLEE, 10 ga Sheet Metal Capacity (Steel), 57/64 in Nominal Size, Knockout Punch and Die Kit - 4CM97|745H-1/2 - Grainger
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