This is the Hobbico High Precision Diagonal Cutter (Shear).

 FEATURES:
Great for Cutting Electric Wires, Photo Etched Metal & Small Diameter
Soft Metals up to .04" (1mm) Diameter.
5" Long with Ultra Slim Design and 7/16" Long Stainless Steel Blades
Spring Loaded to Re-open After Each Cut Soft Coated Blue Handle for a Comfortable Grip