Here you can have a set of Free business vector icons. This icon set is available in the handy AI format, so you can feel free to customize it the way you want. Then, you can always change the color and resize it to meet your need. This one will be good for you who currently working on UI projects, both website or mobile interface. It will also useful as logo icons as well.
Big thanks to Vlad Corey for sharing his icon collection. Make sure to head on his portfolio for more of his stunning works and latest updates. Then, If you like his work, feel free to hit the appreciate button there. You may probably also get another freebie item from his future updates.