Drill bit 7.5 mm LEGO Proline Tools 77075, length 109 mm, 1 pc

135° point angle with chamfering adjustment enables quick drilling and reduces time spent on centre punching. The drills are produced entirely by grinding, ensuring high precision and straightness of holes and delivering performance several times higher than that of standard cylindrical or precision ground drills. Made from high-quality refined HSS, these drills offer increased abrasion resistance, resilience and torsional strength. Packaging varies by diameter: sizes 0.5–8.0 mm are packed in plastic rectangular tubes of 10 pieces, sizes 8.1–13.0 mm in tubes of 5 pieces, and sizes 13.5–20.0 mm in tubes of 1 piece.

Advantages

The 135° point angle with chamfering adjustment provides faster penetration and improved centring accuracy. Full grinding manufacture guarantees straight, dimensionally accurate holes and higher cutting efficiency. High-quality refined HSS material increases wear resistance, while enhanced resilience and torsional strength reduce breakage risk under load. Clear plastic tube packaging protects the drills and simplifies storage and selection.

Key specifications

• Point angle: 135° with chamfering adjustment
• Manufacture: fully ground drills
• Material: refined HSS (high-speed steel)
• Properties: increased abrasion resistance, enhanced resilience and torsional strength
• Packing: 0.5–8.0 mm — 10 pcs per plastic rectangular tube; 8.1–13.0 mm — 5 pcs per tube; 13.5–20.0 mm — 1 pc per tube

How to use

Select the appropriate drill diameter for the intended application and mount it securely in the drill chuck. Use the chamfering adjustment and 135° point angle for rapid penetration and improved centring; apply suitable feed and speed for the material being drilled. Ensure stable clamping of the workpiece and use cutting fluid where recommended to extend tool life. Inspect drills before use for any damage and replace if worn or chipped.

Recommendations

For best results, match drilling speed and feed to the workpiece material and use cutting lubricant for prolonged life. Store drills in their plastic tubes to prevent damage and sorting errors.