848 HSS Metal Twist Drill Bits, 4 x 44 mm The Wera high quality metal twist drill bits for precise drilling in metal. Made out of high speed steel (HSS). A finely-tuned material elasticity provides for a long service life. Very good concentricity. Tough viscous tempered bits ensure a particularly long service life. The hexagonal shaft ensures very good power transfer. Drive " hexagon, suitable for holders as per DIN ISO 1173-D 6.3. Twist bit for metal Application:s
Hex shaft for very good power transfer
HSS = high speed steel with split point
Finely-tuned material elasticity for great durability
Very good concentricity Application: For precise drilling in metal Construction HSS Drive 1/4" hexagon, suitable for DIN ISO 1173-D 6,3 ISO 1173 holders