Kwalkerpro

The Bosch T Shank fit perfectly fine in the Ryobi jig saws, there is just a little trick to get the twist collar lock to lock. When you turn the collar to its open position and insert the Bosch t shank blade I and release the collar it looks like it will not engage, but at this time push the blade in and you will feel almost a springy feel and then the collar releases and locks the blade into place. It works, just need to know this trick. Hope this helps. kwalkerpro