Made from first grade hardened tool steel. Tips are precision ground, lapped and polished with the close tolerances needed for microscopy scale applications. The 8 tips have 0.50 mm (0.020 in.) shank size and are mounted in anodized tool cones. They screw securely into the anodized aluminum handle.Contents:Hardwood storage caseAnodized aluminum handleMicro-Engraver, triangular Micro-Chisel Micro-SpadeMicro-Knife, 20°Micro-Knife, 45°Micro-Engraver, ovalMicro-Carbide Scribe, 5 mm radius tipMicro-Scraper, triangular