Contents:· 5 Pcs high speed steel drills (ø0.5, 1.0, 1.5, 2.5, 3.0mm)· 5 Pcs brass collets (ø0.5, 1.0, 1.5, 2.5, 3.0mm)· 4 Pcs grindstones with arbour· 1 Pcs super thin grinding wheels· Blowing case: 215x145x70 mm· Adaptor output: DC 12V/0.8A D/J ø5.5/ø2.1