Steel Forming Block Blacksmith Silversmith Anvil 2 1/2" This is a new steel forming block The depressions have a smooth finish that are great for shaping metal Made from high carbon tool steel that is precision machined and hardened to perfection Has 5 half cylinders that measure approximately 4.59, 5.92, 6.43, 8.01 and 8.68 mm (0.18", 0.23", 0.25", 0.31" and 0.34") Has five 90 degrees angles that measure approximately 5.11, 5.88, 7.21, 7.52 and 9.01 mm (0.2", 0.23", 0.28", 0.29" and 0.35")