The Diablo 10-Piece Hole Saw Kit features 5 hole saw cups (bi-metal and carbide tipped) and Diablo's SnapLock PLUS mandrel system, including two pilot bits, for quick and easy hole saw cup changes for maximum job performance. This new, high performance hole saw set delivers faster cutting performance and increased productivity versus standard bi-metal and carbide-tipped hole saws. Unlike anything on the market, Diablo hole saws and SnapLock Plus mandrel system simplify the attachment process for fast and efficient hole saw mounting. These radical new hole saws provide ultimate cutting length to bore deeper holes in a single pass; and tool-free plug ejection and Variable Tooth Design for faster cuts.