Product Information Description Measuring Guide Other Details Requires only a single pass of 25mm (1") router to install Glue or staple for secure installation Finish: black plastic Price per grommet Office Ergonomics - How To Do I Need A CPU Holder? How To Reduce Back Pain Ergonomic Desks & Tables Need It Fast? We Can Help! See Our International Shipping Options Request A Quote Today Hafele Paper Guide can be installed with either staples or glue. One pass of a 25mm router will create the cutout needed for the guide.