Drill bit set DeWALT DT5550-QZ 10 pcs diameter 6.5 mm length 101 mm

The DeWALT DT5550-QZ drill bit set contains 10 high-quality twist drill bits with a 6.5 mm diameter and a working length of 101 mm. Designed for general-purpose drilling, these bits are manufactured to provide precise hole-making performance in a variety of materials. The set is suitable for both occasional DIY users and professionals who require consistent drilling results.

Advantages

These drill bits offer consistent concentricity and a geometry that promotes efficient chip evacuation, reducing heat build-up during use. Hardened cutting edges combined with corrosion-resistant surface treatment extend service life and maintain cutting performance. The standardized 6.5 mm diameter and 101 mm length provide predictable depth control for through and clearance holes.

Suitable for

• Drilling clean holes in metal, wood and plastic (material-dependent)
• General repair, maintenance and assembly tasks
• Workshop use with hand-held or bench drills
• Producing clearance holes for fasteners and dowels

Key specifications

• Quantity: 10 pieces
• Diameter: 6.5 mm
• Overall/working length: 101 mm
• Type: twist drill bit
• Material: high-speed steel (typical for this product category)
• Finish: corrosion-resistant coating for extended life

How to use

Secure the appropriate drill bit in the chuck of a hand-held drill or drill press and tighten the chuck to prevent slippage. Select a suitable speed for the material being drilled and, if required, use cutting fluid for metal to improve cooling and chip removal. Position the workpiece securely and start drilling with steady pressure; avoid excessive force to preserve bit life and prevent breakage. After use, clean the bits and store them in their case to maintain condition.

Usage recommendations

For best results, match drill speed and feed to the material: higher speeds for wood and plastic, lower speeds with lubrication for harder metals. Inspect bits for wear or damage before use and replace when cutting edges become dull to ensure hole accuracy and safe operation.