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Greenlee 7235BB Knockout Kit Hole Punch Set, 10 Piece, 10, 12 ga. Steel, 1/2" - 1-1/4" Conduit Size knockouts (Hole Size: 0.89" - 1.70" or 22.5 mm - 43.2 mm) : Amazon.co.uk: DIY & Tools
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Greenlee Manual Round Standard Knockout Punch Kits, 1/2 - 1 1/4 in - 1 ST (332-735BB)" - Walmart.com
![Greenlee 7235BB Knockout Kit Hole Punch Set, 10 Piece, 10, 12 ga. Steel, 1/2" - 1-1/4" Conduit Size knockouts (Hole Size: 0.89" - 1.70" or 22.5 mm - 43.2 mm) : Amazon.co.uk: DIY & Tools Greenlee 7235BB Knockout Kit Hole Punch Set, 10 Piece, 10, 12 ga. Steel, 1/2" - 1-1/4" Conduit Size knockouts (Hole Size: 0.89" - 1.70" or 22.5 mm - 43.2 mm) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/91mHWZ9i9tL._SL1500_.jpg)