Au-ve-co® 20396 Specialty Insert, 1/2 in Dia Head, Metal

Au-ve-co® Specialty Insert, 1/2 in Diameter Head, Metal, Make/Model/Year Compatible: GM, Additional Information: 1/4-20 Screw Size, Yellow Color, Zinc Finish, 0.3 to 0.165 in Grip Range, 3/8 in Hex Size, For Use With 11805 Nutsert Hand Tool