5 PC Diamond Saw Set for rotary tools incl: Dremel, Foredom, Sears, etc. Uses incl: cutting glass,tile medal,stone etc. Compare to the stone disk normally used but lasting much longer. Hints: Use with cutting oil or water for prolonged use. Eliminating heat etc: Complete with 1/8" standard mandrel. Grit Med: Diameter of saw's approx 7/8" Mandrels included/