Tacwise 14mm Staples - 13 Series This is a box of 5000 14mm staples from Tacwise. Tacwise are often considered the market leaders in staples, staple guns and other accessories, and these 14mm staples can be used in a range of different staplers and staple guns. Tacwise staples twist as they enter the material, meaning that they create a more secure fixing than other staples.