Features: High speed steel with Cobalt bit Titanium coating prevents bit dulling due to overheating Special centre nib design prevents slipping Metal tin for easy storage and transportation Suitable for many materials including bronze, cast iron, stainless steel and titanium Specifically designed for removing spot welds on most vehicle panels Can be used for cutting through weld seams Specifications: Sizes: 1 each -   6.5, 8.0, 10mm X 45mm long and 8.0mm X 79mm long