Screw machine drill with wider flutes. Made of high speed steel. Applicable for drilling in steel, cast steel, alloyed and non-alloyed, grey cast iron, graphite, malleable cast iron. Made specially for the high end manufacturing industry, these are more than capable for jewelry applications in non-ferrous materials.
These drills are custom made by one of the leading tool and die manufacturers in the world, exclusively for Pepetools in the jewelry industry.
|Size||Inches||Metric||Flute Length||Total Length|
|52||.0635||1.6mm||11/16||1 - 11/16|
|53||.0595||1.5mm||5/8||1 - 5/8|
|54||.0550||1.39mm||5/8||1 - 5/8|
|55||.0520||1.32mm||5/8||1 - 5/8|
|56||.0465||1.18mm||1/2||1 - 3/8|
|57||.0430||1.09mm||1/2||1 - 3/8|
|58||.0420||1.07mm||1/2||1 - 3/8|
|59||.0410||1.04mm||1/2||1 - 3/8|
|60||.0400||1.01mm||1/2||1 - 3/8|