Designed for professional use: drilling in high-grade stainless steel, structural steel, INOX and cold-rolled steel. • HSS steel provides several times faster drilling and maintains resistance to damage and dulling, maintaining drill geometry• cross-blade „split point” with an apex angle of 135° allows drilling without pre-scoring, guaranteeing perfect centering• dissipate heat quickly when drilling in hard steels, without burning the drill bits• grinded surface and edges to Di N 338 standard ensure excellent drilling precision and ideal dimensions of the drilled hole• lower coofriction factor reduces the adhesion of swirlsoros and filings to the drill bits• made from a single piece of HSS 6542 steel, making them strong and durable• 1/4" HEX shank (6. 3 mm)The set includes 10 HSS drill bits with diameters: 1. 5, 2. 0, 2. 5, 3. 0, 3. 2, 3. 5, 4. 0, 4. 5, 5. 0, 6. 0 mm, packed in a handy case
