While the Obutto does come with some VESA mounting screws, please be careful using these, as some monitor manufacturers have gone to using/requiring different sizes.
Obutto provides some M4 size screws, your monitor may require a differing size, or length. Using too long of a screw can seriously damage your monitor!
Please check with your monitor instruction manual to find out the proper size, you can get them at any local hardware store that sells metric size screws. We do not provide extra replacements due to liability reasons.