The basics Be as bold as you dare with our edgy matte black hair-cutting shears. The benefits Hybrid of the convex and beveled edge shears that are sharper than beveled edge shears +and very durable. The uses For meticulously precise cutting performance & the most advanced cutting techniques. The bottom line Set optimal shear tension by adjustable screw with no special tools required. Shear Finish: Matte Black. Rockwell Hardness: Level 3 out of 3.