Patent ID: 7328867

Claim:
A paper shredder cutting tool comprising a first rotary cutter set; and a second rotary cutter set; each of said first rotary cutter set and said second rotary cutter set further comprising a shaft, and a plurality of cutters, each comprising a first blade and a second blade matchingly juxtaposed on said shaft, each of said first blades and said second blades having at least one blade tip formed on a periphery thereof with a center hole adapted to engage said shaft, and each of said first blades having a cylindrical protruding ring extending axially; wherein said plurality of cutters are disposed with said first blades and said second blades alternatingly arranged on said shafts, and the cutters of said first rotary cutter set are axially offset from the cutters of said second rotary cutter set, allowing said first rotary cutter set and said second rotary cutter set to interpose with the blade tips on said first rotary cutter set aligning with the protruding rings of said second rotary cutter set.