Here is some info that I picked up from Patrick at Igrips Booth at the Novi Snow show. Patricks contact info and to order: He has some longer products coming out for taller track that I will be testing towards the end of this year once they have been made for final production. I currently have 211 of the 22Rs in my Sidewinder with about 1700 miles and are working well. The 22Rs will be updated to the 24Rs for future tracks jobs. The new 24 Rs are 24 mm long and a little nicer carbide tip as well as a new flatter thread pitch. I am also running these 22Rs in my 1 3/4 Back Country and will be updating to the new longer stud as stated once its in production.