Barber scissors Convex Edge, Adjustable Set screw, Simi-Off set handles, Detachable finger rest Material: This scissors is & can be manufactured using three different types of Stainless Steel. 1- SUS-440C Stainless Steel. Rockwell HRC 58-60 2- SUS-420 Japanese Stainless Steel. Rockwell HRC 54-56. 3- 410 ( J-1 ) Stainless Steel and Rockwell HRC 42-44.