GUHRING 05519 007.900 TWIST DRILLS

Design: Triple-edged with point-shaped tip, special grinding and special thinning. Normal angle of rake 28°, core thickness thicker than normal and without core gradient. Application: For drilling into the full piece for holes with an accurate position and shape up to 5 x D. Particularly for castings and long chipping al-alloys. Note: Due to the centring tip, spot centring can be omitted in some cases.