For your information, approximately 25 millimeters
equals 1 inch. The first number is the width and the second
number is the length. As an example, an M3x25mm is 3 millimeters wide by about 1 inch long. Also, as with most screws, you do not count the head as part of the length.
Notice as you scroll down the list that each size is listed twice, first the small pack, and then the larger economy pack.
After entering the number of packages that you want for each item,
simply click the "Add To Basket" button at bottom of the page.
Please note that some longer sizes are not fully threaded. If this is a concern, please contact us for more information.