The 15A-SW 70° angulated radius edge cutting tweezer is designed with a round face to provide greater visibility. The overall length is 4.5". It is made of carbon steel with flame hardened edges. It is epoxy coated to prevent oxidation. Ergo-Tweezers are ideal for working in cleanrooms, while providing operators comfort when using for prolonged periods. The ergonomic handles also offer superior insulation and durability from extreme heat when soldering. These tools are cleanroom safe.