oxnsox:sbiddle: Staples shouldn't be used on cat5 cable anyway.
These aren't Flat staples. For want of a better description, they're hoop shaped, which leaves a half round loop above the timber. Stables also have a plastic saddle to spread the load and minimise crushing.
It's for running cables under a house, plus he's not a good mate, so I'm not really that fussed
