ريش الثقب المعدنية بوش قياس (5.5mm) المصنوعة من الفولاذ سريع القطع (HSS-G) المكونة من عشر قطع تباع (Per Pkt)

Key specs include High-Speed Steel (HSS-G) construction, a precision-ground tip for accurate starting and clean holes, a 5.5mm diameter, and a 10-piece pack. The bits are designed for fast drilling with a robust surface finish to reduce wear and friction during use.

HSS-G bits offer strong wear resistance and good heat tolerance, making them reliable for metal drilling. They’re generally more durable than basic carbon steel bits and less brittle than carbide variants, providing a good balance of performance and cost for common metalworking tasks.

They’re suitable for drilling a variety of metals, including steel, aluminum, and iron, making them versatile for many metalworking projects.

Tips: clamp the workpiece securely, mark the center, use a slow-to-medium drilling speed, and apply steady, moderate pressure. Use cutting fluid or light oil to reduce heat and prolong bit life. Keep the drill perpendicular to the workpiece and periodically retract the bit to clear chips.

Ensure your drill chuck can hold a 5.5mm bit securely, use a stable work surface, and consider a drill press for added accuracy. Start with a light pilot hole if needed and maintain steady feed pressure. For best results, avoid overheating by using coolant or lubrication when drilling hard metals.

After use, wipe off metal residue and store the bits in their case to prevent rust. Keep them sharp by planning for resharpening if needed, and avoid running the bits dry at high speeds. Clean, dry storage helps preserve their edge and performance.

Yes. Always wear eye protection and gloves, clamp the workpiece, secure the drill in a stable chuck, and avoid excessive force. Use proper speed for metal drilling and keep the bit cool to prevent overheating and premature wear.

If you want to compare similar 5.5mm HSS-G options on Fepy.com, you can check these products: https://fepy.com/product/bosch-hss-g-metal-drill-bit-5-5mm-6-pcs-pack, https://fepy.com/product/bosch-hss-g-metal-drill-bit-5-5mm-20-pcs-pack, and https://fepy.com/product/makita-hss-g-metal-drill-bit-5-5mm-10-pcs-pack. These offer similar specs in different pack sizes and brands.

The 5.5mm size is a mid-range hole diameter suitable for many metal projects. If you anticipate different hole sizes, you might want to pair this set with additional bits in nearby diameters (e.g., smaller for pilot holes or larger for larger-through holes) to cover a wider range of tasks.

The 10-piece pack provides a ready supply of reliable HSS-G bits, reducing the need for frequent replacements and ensuring you have backups on hand. This typically offers cost savings versus buying single bits over time and simplifies project planning by having multiple bits available.