Jobber drill set with cyl. shank Design: Profile grinding, right cutting, with precise cross point geometry, normal angle of rake, core thickness and core gradient. Supplied in a robust, high quality plastic cassette with automatic drill setup function when opened. Application: The proportion of cobalt provides for improved thermal resistance. Especially for alloyed and non-alloyed steels (up to 900 N/mm² in strength), hot and cold work steels, tempered and case-hardening steels and for rust and acid-resistant steels.