Techni-Pro 758PL5151 Head width: 0.49' | Head thickness: 0.25' | Head style: OvalHigh quality ball-bearing steel63 Rockwell hardness (HRC)Perfect symmetry High Precision Cutter, Large Oval Head, Flush, ESD Safe The 5151 is a high-precision cutter belonging to the large oval cutter family. This type of geometry provides excellent resistance, and the 5151 head dimensions support cutting.The flush cutting edge is suitable to perform clean cuts with some tolerances. The 5151 is equipped with an ESD Ergo-tek handle which allows an excellent grip and is suitable for environments and components susceptible to electrostatic discharges. The blades are hardened to 67HRC hardness. Infinity Elite Series Comparison Table ModelTypeHead Width Head Thickness Handle Type Head Style Cut 758PL5352High Precision Cutters0.49'0.25'Ergonomic SlimTaperedFull Flush758PL5291High Precision Cutters0.39'0.25'Ergonomic SlimOvalFlush758PL5150High Precision Cutters0.49'0.25'Ergonomic SlimOvalSemi Flush758PL5151High Precision Cutters0.49'0.25'Ergonomic SlimOvalFlush758PL5152High Precision Cutters0.49'0.25'Ergonomic SlimOvalFull Flush758PL5247High Precision Cutters0.39'0.25'Ergonomic SlimObliqueFlush758PL5540High Precision Cutters0.39'0.25'Ergonomic SlimTapered RelievedSemi Flush758PL5542High Precision Cutters0.39'0.25'Ergonomic SlimTapered RelievedFull Flush