No need to mess around with colors-black Velobind strips are an essential for every office, home office, or crafting space. And Velobind is a great way to go when it comes to binding. Velobind holds the most out of all other forms of binding. And if you get the 4-pin, you'll be able to edit your documents easily. But if you get the hot knife style, you'll get the most secure documents. Both styles offer a minimalistic, clean look to your document or book. They make great manual or project report binding. One inch strips hold up to 250 while 3" strips hold up to 750 of 20lb paper. And we carry GBC and our own brand, so they'll work with a variety of machines. So make your bound documents look as professional as possible with Velobind strips.