4PC HSS COBALT SPOT WELD DRILL SET DS1437

High speed steel with Cobalt bit, Titanium coated, prevents bit dulling from over heating.

• Special centre nib design to avoid slipping
• M35 to HRC65-67
• Titanium coated
• Sizes: 1pcs 6.5mm, 8mm, 10mm (Length:45mm)
• Sizes: 1pcs 8mm (Length: 79mm)