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When used on external threads this series has greater tensile stress area than coarse threads of the same size
During independent lifetime testing Delta point drill bits averaged 609 holes in 20mm mild steel
12" Extension for use with 7/16" hex shanks
Ideal for cutting timber and all types of composite board
Fits 1/2" chuck drills
1.0mm - 10mm x 0.5mm, 11.0mm - 13.0mm x 1.0mm, 3.2mm, 4.2mm, 6.8mm 25PCE HSS BRT DELTA POINT DRILL SET When used on external threads1. 0mm 10mm x 0. 5mm, 11. 0mm 13. 0mm x 1. 0mm, 3. 2mm, 4. 2mm, 6. 8mm 25PCE Delta Point Bright Finish HSS Twist Drill Bordo Metric Delta Point HSS Twist Drills. DIN338 Delta Point drills have a multi faceted cutting tip. Rather than try and modify existing point types, or tweak the grind angles, Delta Point tip design required a revolutionary re think of drill tip function. The overall length of the cutting edge significantly exceeds that of