Left-hand parallel shank twist drills. Short series. Basic dimensions
STANDARD published on 1.5.1988
Designation standards: STN 221180
Classification mark: 221180
Catalog number: 54424
Publication date standards: 1.5.1988
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Slovak technical standard
Category: Technical standards STN