Vintage Snap On Tools. 1/2 Drive – 4-PT Square Plug Socket Set Knurled Side Old Logo. Cosmetic condition is in used antique condition. The finish is mostly just raw metal, with patina and discoloration. However, given age, there are no major issues to note. The 4-PT drive openings are are mostly in good shape. The 9/16 shows some heavier wear along the edges. As noted above, the 7/16 is. Crack in 2 spots. I did not see any other performance issues.