I am new here but have had my ram for 11 years now. Last time I did my transfer case I actually bought a little set of short hex that are 3/8" drive. Made by SUNEX Tools. Mine is a 4WD so there was not enough room to get a ratchet on there but I just used some channel-lock or vice grip on the socket. Think I used a 10mm from looking at the set. I tried to cut down an allen but my band saw would not get a bite on it.