Tester, I sent the link you provided to my CarQuest acquaintance. He said he could order the tool, but it would probably take a week. He suggested I try getting the “cap” to turn by using a flat blade screwdriver and hammer to get it started turning. If I broke it, the cost of a new cap would be less than the tool. I soaked it with PB Blaster for good measure, and the screwdriver and hammer did the trick. Now all I need is $180.