Relentless Ergonomic Sidecutter with regular jaw is ideal for many different jewelry and watch work applications. They are made of German steel, with box-joint construction and double-leaf springs. They feature ergonomic handles to alleviate carpal tunnel and arthritis. The ergonomic shapes gives handles 60% more gripping surface than other cutters. Made in Germany. Rockwell hardness of 60. 4-1/2" (115mm) long.