Sealey electrician s 9 piece hole saw kit sealey hke9 m3 hss steel cutting edge welded onto alloy steel backing for heavy duty performance vari pitch tooth profile gives clean and fast cut suitable for cutting a wide range of metals alloys and plastics supplied with pilot drills includes simple arbor for saws between 14 30mm and quick release arbor for saws between 32 152mm supplied in carry case sealey hke9 hole saw kit electrician s 9pc