Omega Technologies Standard Blind Nut Blind / Bolt Anvil, ”C” type driving tool. Omega Technologies Standard Blind Nut / Blind Bolt Anvil is manufactured with hardened tool steel making it a long-lasting and durable tool. Omega Technologies Standard Blind Nut / Blind Bolt Anvil is a component of the ”C” Type Blind Nut Standard Driving Tool assembly for use with a Hi-Shear® HP Tooling BG2500 Hydraulic Power Gun. Omega Technologies Standard Anvil Heads are designed to seat against the shapes and diameter sizes of the sleeve heads of blind nuts and blind bolts.