Drill Bit Set Irwin HSS-R DIN338 – 13 pcs 1.5–6.5 mm in case

Irwin HSS-R DIN338 13-piece drill bit set contains high-speed steel twist drills in metric sizes from 1.5 mm to 6.5 mm, supplied in a compact plastic case. The set includes common small and medium diameters: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6 and 6.5 mm, covering a broad range of general metalworking and workshop needs. The HSS-R material and DIN338 geometry provide a balance of cutting performance and toughness for drilling into steel, non-ferrous metals and other common workshop materials. The plastic case keeps the bits organised and protected, making the set convenient for transport and storage.

Advantages

The set offers a selection of precision-ground HSS-R drill bits manufactured to DIN338 geometry, which ensures consistent flute form and point angle for reliable chip evacuation and accurate hole positioning. High-speed steel construction gives good heat resistance and wear properties for intermittent drilling tasks in metal and other durable materials. The compact plastic case provides orderly storage and reduces the risk of damage or loss of individual drills during transport or in a toolbox.

Suitable for

• Drilling holes in mild and alloy steel, stainless steel up to moderate hardness
• Fabrication, repair and maintenance tasks in workshops and construction sites
• General-purpose metalworking, sheet metal and non-ferrous metal drilling
• Hobbyist and DIY projects requiring a range of small to medium drill sizes

Key specifications

• Material: High-speed steel (HSS-R)
• Standards: DIN338 geometry
• Number of pieces: 13
• Diameter range: 1.5 mm to 6.5 mm (metric sizes included)
• Storage: Plastic case for organised transport and storage

How to use

Select the drill diameter appropriate for the required hole size and secure the workpiece. Use a suitable drill chuck and set the drill press or hand drill to an appropriate speed for the material being cut; lower speeds for hard steels and higher speeds for softer metals. Apply steady, even pressure and allow the drill to cut without forcing; withdraw periodically to clear chips if drilling deep holes. Use cutting fluid or coolant when drilling into steel to extend tool life and improve hole quality.

Usage recommendations

Wear appropriate eye and hand protection when drilling. Match drilling speed and feed to the material and use cutting lubricant for steel to reduce heat buildup. Store the drills in the provided case to prevent edge damage and maintain organisation.