74mm Oil Filter Wrench – 15 Flute Oil Filter Removal Tool for AC Delco PF63 PF64, Chevy, GMC, Buick, Cadillac. Make oil changes quick and hassle-free with this74mm, 15-flute oil filter wrench, designed forAC Delco PF63 and PF64 filters found in Chevy, GMC, Buick, and Cadillac vehicles.