Annular cutter made of HSS-XE special steel + gold-tech surface treatment. Karnasch gold-line annular cutters are the most commonly used non-coated HSS-XE annular cutter.
6-piece set
Gold-Tech surface treatment: the special treatment for higher lifetimes
55mm drill depth
For extreme hardness at the tip of the tooth up to 68 HRC
This guarantees a high wear resistance and lifetime