Makita D-67561 Set of 19 HSS-Co 5% Metal Drill Bits, Ø 1–10 mm

The Makita D-67561 is a professional set consisting of 19 HSS-Co metal drill bits with 5% cobalt, designed to deliver precise and reliable drilling even in hard steels, stainless steel, and high-strength materials. The cobalt-alloyed high-speed steel (HSS) composition increases the drill bit’s resistance to the high temperatures generated during machining, making this set particularly suitable for professional use and demanding applications.

The set includes drill bits with progressive diameters ranging from Ø 1 to Ø 10 mm, offering a complete range for the most common metal drilling operations. The drill’s geometry, featuring a 135° cutting angle, ensures precise contact with the surface and allows for a more stable start to drilling, reducing the drill’s tendency to slip on the material. This feature allows for precise drilling without the need for pilot holes in materials up to 10 mm thick, under appropriate working conditions.

Makita D-67561 drill bits feature the characteristic bronze-colored finish and have a cylindrical shank, making them compatible with standard drills and drill/drivers equipped with a traditional chuck. They are suitable for machining alloy and non-alloy steels, V2A and V4A stainless steel, cast iron, and cast steel, thus offering a versatile solution for machine shops, metal fabricators, installers, maintenance technicians, and craftsmen.

The 5% cobalt content makes these drill bits particularly suitable for applications where a standard HSS drill bit may be subjected to high temperatures and stress. To achieve the best drilling quality and preserve the cutting edge for longer—especially when working with stainless steel or particularly hard steels—it is recommended to use an appropriate cutting oil or coolant, while maintaining the correct rotational speed based on the drill bit’s diameter and the material being drilled.

The D-67561 Set is recommended for those who need a single professional assortment to handle a variety of applications, from standard steel drilling to the most demanding operations on stainless steel. When drilling through the most resistant materials, it is best to apply constant pressure and avoid excessive speeds that could cause the cutting edge to overheat. The use of coolant or cutting lubricant helps dissipate heat, improves the quality of the hole, and significantly extends the life of the drill bits.

With a range of 19 diameters from 1 to 10 mm, this set offers a practical solution for both daily use in the workshop and as a must-have in any professional’s toolkit.