Drill bit set Proline 78032K — 3 pcs, Ø 3.2 mm, length 65 mm

Proline 78032K — 3 pcs, Ø 3.2 mm, length 65 mm is a set of three high-speed steel (HSS-Co) drill bits designed for general-purpose drilling in metal and similar hard materials. Each bit measures 3.2 mm in diameter and 65 mm in overall length, suitable for handheld drills and drill presses. The drills are made entirely by grinding to ensure accurate geometry and straightness of holes, and they feature a 135° point angle with chamfering adjustment for fast penetration and reduced need for repeated marking.

Advantages

The Proline 78032K set is manufactured from premium HSS with 5% cobalt, giving enhanced heat resistance and wear performance when working in high-alloy, titanium, acid-resistant and stainless steels, creep-resisting steels and cast iron. Fully ground flutes provide precise cutting geometry and straight holes, while the 135° point reduces walking and improves centring. Supplied in a compact blister pack, the set provides spare bits for repetitive tasks, maintenance and small fabrication or repair jobs.

Suitable for

• Drilling holes in high-alloy and stainless steels
• Working with titanium and acid-resistant materials
• Small fabrication, maintenance and repair tasks
• Use in handheld drills and drill presses

Key specifications

• Quantity: 3 pieces
• Diameter: 3.2 mm
• Overall length: 65 mm
• Material: High-speed steel with 5% cobalt (HSS-Co)
• Point angle: 135° with chamfering adjustment
• Manufacturing: Fully ground flutes for high accuracy and straightness
• Temperature resistance: Enhanced for high-temperature drilling
• Packed: Blister pack

How to use

Secure the workpiece and select appropriate cutting speed for the material being drilled. Fit the 3.2 mm bit in the drill chuck and ensure it is clamped tightly and correctly aligned. For metals and hard alloys, use steady pressure, moderate feed rate and appropriate coolant or cutting fluid to reduce heat and extend bit life. The 135° point improves centring; if necessary, use a centre punch for very precise starts. After drilling, clear chips from the flutes and inspect the hole for straightness.

Usage recommendations

Use cutting fluid when drilling stainless, high-alloy or heat-resistant steels to reduce temperature and wear. Match drill speed to material hardness (lower speeds for harder alloys), and replace worn bits to maintain hole accuracy. Store the bits in their blister pack to protect the ground cutting edges.