High Speed Steel Good balance of cost and durability. Maintains hardness (temper) at high speeds
Cup Bur
Excellent for rounding and smoothing prongs, posts, wire and rivet heads. These burs have a cross-cut that aids in cutting metal discharge and prevents clogging.
Characteristics and advantages:
- High cutting efficiency and thus shorter working time
- Considerably more material reduction as with standard cup burs
- Excellent waste/scrap metal removal – no clogging
- Ease of cleaning
- Longer service life as standard cup burs
- Better surface quality