Square End Mill, mm Milling Dia., Carbide, WXL Item # 35AW60; Mfr. Model # UNSPSC # Catalog Page # N/A Country of Origin Japan. Country of Origin is subject to change. The WXL coating on these end mills protects them from wear and is designed for milling nonferrous metals and steels with a Rockwell hardness of up to 50 HRC