All of the images are 48 X 48 and you can download any of them by right clicking on the image and select 'save picture as' or 'save image as', etc. OR, for your convenience, you can download all of them (on this page) by clicking HERE.
You may notice that some of these images look familiar, but these were made by me from scratch. They are the formatted for the web so these are in the .png format. I hope you can find them useful.