From the Manufacturer
The Astro Pneumatic 1600 16-Piece Punch and Chisel Set is made of heat treated chrome vanadium steel. It includes the following: Punches – (5) Taper punches, (5) Pin punches, (2) Center punches. Chisels – (3) Clod chisels, (1) Chisel gauge and (1) Plastic storage tray. Hardness: 54~58HRC
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Taper Punch: 3/32-inchby5-1/4-inch, 1/8-inchby5-3/4-inch, 5/32-inchby6-inch, 3/16-inchby6-1/4-inch, 1/4-inchby6-3/4-inch
Cold Chisels: 3/8-inch by 5-1/2-inch, 1/2-inch by 6-inch, 5/8-inch by 6-1/2-inch
Pin Punch: 3/32-inch by 4-1/4-inch, 1/8-inch by 4-3/4-inch, 5/32-inch by 5-inch, 3/16-inch by 5-1/4-inch, 1/4-inch by 5-3/4-inch
Center Punch: 1/8-inch by 5-inch, 3/16-inch by 6-inch
Product material: CR-V and hardness: 54~58HRC