This is the Alangator TriMag, made to fit your Ruger .22 LR ten round factory magazines. It fastens three magazines together in triangular fashion as show in the pictures. Now you can have reliably feeding factory magazines with 30 rounds at your quick disposal, without a long hanging banana mag below your rifle. It fits the 10/22, 96/22, and 77/22 rifles. This auction is for the fastener device only, not magazines which are pictured to illustrate its function. The TriMag was developed and produced by an American veteran who saw tours in Iraq. It is made in America in the great state of Idaho, by American veterans. There is not one molecule of this item which comes from China. It is easily assembled and here is a link to my demonstration video: https://www.youtube.com/watch?v=EU6gJ2uV5eU