The Clarke CHT931 99-Piece Cobalt Drill Set is manufactured from M35 steel for increased speed and effective cutting, even at high temperatures. Each drill bit is finished with a 135° split point, ideal for the cutting of sheet materials, reducing the chance of the bit slipping during use, the 5% cobalt content also makes the drills better at drilling in harder materials.

We strongly advise that when drilling in steel and stainless steel, that you use a cutting fluid and center punch when starting the hole.

The CHT931 set is supplied in a compartmented metal carry case for easy storage and transportation.

The drill set comprises:

• 1.5mm x 16
• 2mm x 16
• 2.5mm x 15
• 3mm x 10
• 3.2mm x 10
• 3.5mm x 8
• 4mm x 8
• 4.5mm x 3
• 5mm x 3
• 5.5mm x 2
• 6mm x 2
• 6.5mm x 2
• 8mm x 2
• 10mm x 2