Long and Short Drill Bit Set Available for Deep Hole Drilling and General Applications

This long and short drill bit set provides the complete length coverage that professional users need when moving between deep hole drilling and standard applications. The set combines conventional length bits for everyday work with extended length bits that reach recessed areas, thick sections and deep cavities that standard drills cannot access. This dual-length design eliminates the need to buy separate short and long sets, saving cost and storage space.

Manufactured from M2 high speed steel with a hardness of HRC 63-65, both long and short bits deliver dependable cutting performance in metal, wood and plastic. The short bits offer maximum rigidity for accurate starts and shallow holes, while the long bits provide the reach required for deep drilling with controlled flexibility. Together, they form a versatile kit that adapts to the full range of drilling challenges found in workshops and on site.

• Dual Length Design: Combines short bits for rigidity and long bits for reach, covering both deep and shallow drilling needs.
• Deep Hole Capability: Extended length bits access recessed workpieces, thick materials and confined spaces.
• M2 HSS Quality: Consistent hardness and edge retention across all lengths for reliable performance.
• Versatile Material Use: Suitable for steel, aluminum, wood, plastic and composite materials.
• Complete Size Range: Metric diameters from 1.0 mm to 10.0 mm in both length categories.
• Organized Storage: A labeled case keeps long and short bits separated and easy to identify.

The short bits in this set are ideal for sheet metal, cabinet work, electrical panels and other applications where rigidity and precise starts matter most. The long bits excel at drilling through thick timber, laminated beams, insulation-backed panels, engine blocks and other deep-section workpieces, as well as reaching fasteners and fittings in recessed areas that are inaccessible to standard-length tools.

Maintenance technicians use the long bits for drilling through double-wall structures, plumbing access and machine frames, while fabricators rely on the short bits for repetitive hole patterns in flat stock. This combination set is a practical answer for tradespeople who encounter varied drilling depths throughout the working day and prefer one kit that covers all of them.

The set is packed in a molded plastic case with separate sections for long and short bits, shipped in a protective export carton. We offer custom branding, size configurations and packaging design services for OEM partners. Quality control includes hardness verification, straightness inspection and performance testing on representative materials before shipment.

As a professional cutting tool manufacturer, we ensure consistent quality and reliable supply for wholesale and distribution customers. We provide competitive factory prices, flexible order quantities and responsive communication. Contact us today for a quotation and delivery proposal.