Sizes: - 5/16 inch (8mm) - 1/4 inch (6.5mm) - 7/32 inch (5.5mm) - 3/16 inch (5mm) - 5/32 inch (4mm) - 1/8 inch (3mm) • Hardened Carbon Steel • 45-48 HRC • Knurled Body • Pouch Packing • Used for Punching Holes in Leather, Vinyl, Plastic, Paper Etc • Great for Hobbies, Crafts, Customizing or Repairing Belts, Shoes, Purses , Jackets etc