What strings did Stevie Ray Vaughan use?

Stevie used Fender amps, amps created by Charlie Dumble, a Texas amp builder, and played Fender Strats. He called his recording studio amp setup 'the wall of doom' because there were so many different amps, and he kept his amp tech busy , as he stated, cause there wasn't a day that went by that he didn't have one blow up. His legendary sound also was created by his noted use of heavy gauge strings, not of the typical 9/42 or 10/46, but something like(trying to remember)12?/62 that coupled with his mid boosted sound presented a sound, like Stevie, was larger than life itself. He displayed a ferocity onstage, a true passion for the blues. I remember reading an article about his 'skin patches', where he would put super glue on his fingers and apply them to his forearm to literally 'patch' the tips of his fingers. He had finally come full circle, exorcised his demons, embraced sobriety, and was in the prime of his life, when it tragically ended.......RIP, SRV.......Tom