These line 24 steel long post snaps for leather are brass plated. This is a package of 10 complete snap sets.

To set the line 24 snaps with long posts for leatherwork, you need to first punch a hole in the leather for the snap cap and another hole for the snap post (eyelet). Insert the cap into the hole, place the socket over the snap cap post to be set. Under the snap cap, you will need to place a concave anvil so the cap keeps the nice curve when you set it. To do this, you need a setter to hit with a mallet that will crimp the metal snap post around the inside of the socket. Insert the other part which is the post (eyelet) into the hole, place it on the flat anvil, place the stud over the post and use the setter to crimp the metal snap post (eyelet) inside the stud. The snap setter and the concave anvil required for this large size line 24 snap with the long post will also work with the other large line 24 jacket snaps with the regular post.

When buying snaps, the thickness of leather must be considered.  These large snaps with the long post post work great with 8 - 10 oz thick leather while the other line 24 large snaps with the regular posts work great with 5 - 7 oz  thick leather.  An oz is about 1/64 inch thick.

Following is a video showing how to set jacket snaps with long posts in thicker leather.  The procedure is the same for learning to set snaps in leather with line 20 and regular post length line 24. Just make sure you have the appropriate setter for the line of jacket snap used.  Also the mini anvil makes a great work surface instead of using a large homemade anvil shown in the video.