stampingdelight Report post Posted May 21 I know 9mm is smaller to 12mm my questions is how much more when looking a a normal ruler. I have 2 double cape 12mm left over from a project & wanted to get idea on how much smaller the 9mm is compaired to it, anyone have a photo of the 2 side by side? Quote Share this post Link to post Share on other sites
Aven Report post Posted May 21 The 9mm cap is a quarter smaller than the 12mm. Quote Share this post Link to post Share on other sites
kgg Report post Posted May 21 (edited) 1 hour ago, stampingdelight said: I know 9mm is smaller to 12mm my questions is how much more when looking a a normal ruler. 9 mm is 23/64" and 12 mm is 30/64". The 9mm cap can be used with a 12mm cap /shaft or vise versa. Here is a chart of the dimensions of double cap rivets. Notice the shaft dimensions (Rivet D). kgg Edited May 21 by kgg Quote Share this post Link to post Share on other sites