Drill bit set Proline 5772138 HSS-G 1.5–6.5 mm 13 pcs

Proline drill bit set 5772138 HSS-G 1.5–6.5 mm 13 pcs is a collection of high-speed steel (HSS) twist drills designed for drilling metal. The set includes 13 bits with diameters from 1.5 mm to 6.5 mm, ground cutting edges and a 135° point angle with adjustable flute relief for improved centring and reduced walking.

Advantages

Manufactured from high-quality HSS steel, these drill bits offer increased wear resistance and enhanced strength to withstand torsional stresses. The 135° point angle and precision ground edges provide accurate drilling in metal and longer tool life compared with standard bits. The set covers a wide range of common diameters, making it practical for general metalworking tasks.

Suitable for

• Drilling steel and other ferrous metals
• Workshop and maintenance tasks
• Prototype and repair work requiring multiple diameters

Key specifications

• Brand: Proline
• Model / MPN: 5772138
• Material: HSS (high-speed steel)
• Point angle: 135° with flute relief adjustment
• Set contents (diameters): 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.2 mm, 3.5 mm, 4 mm, 4.5 mm, 4.8 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm
• Number of pieces: 13
• EAN: 5903755772138

How to use

Secure the appropriate drill bit in the chuck of a suitable drill or drill press and tighten firmly. Mark and centre the drilling point on the metal surface; for precise starts, use a centre punch. Use cutting fluid or oil when drilling harder metals to reduce heat and prolong tool life. Start at low speed to establish the hole, then use an appropriate feed and speed for the material and diameter.

Usage recommendations

For best results, apply cutting lubricant, use steady feed pressure, and avoid excessive speed that can cause overheating. Replace worn bits to maintain hole quality and reduce risk of bit breakage.