Professional tool for commercial or occasional use Cobalt spot weld drill set 6.5mm - 10mm spot weld drill 4pc cobalt tipped spot weld drill Specifically designed for removing spot welds on most vehicle panels High speed steel with cobalt bit Suitable for use with electric or pneumatic drills Because they go through the spot weld minimal material is removed Perfect for removing spot welds Cuts straight through the spot weld so no worries about damaging the tips Titanium coating prevents drill bit dulling due to overheating Special centre NIB design prevents slipping when using. SET INCLUDES THE FOLLOWING SIZES - 1 x spot weld drill - 6.5mm (total length 45mm) - 1 x spot weld drill - 8mm (total length 45mm) - 1 x spot weld drill - 10mm (total length 45mm) - 1 x spot weld drill - 8mm (total length 79mm) Comes in a metal tin for easy storage and transportation