Made in USA worked great. They are the brand the factory/dealership would use. I used them on an 06 Chevy Colorado with the 3.5L straight 5 and auto transmission, supposed to work for the 4 cyl and 3.7 5cyl
Kent Moore J-45951, front main seal driver
Kent Moore EN-46547, crank holding tool for the I believe 4l60
Slips into the access hole on the bottom of the bellhousing and locks into the teeth and bellhousing. It takes like 100 something ft lbs AND 180 degrees of rotation, so it's a ton of torque, the tool is basically a necessity.
Make an offer. The driver is like $300 new and the holding tool was like $250 new