Description Includes 552-005, Diamond Dry Hole Saw Ø 5mm (3/16in) 552-006, Diamond Dry Hole Saw Ø 6mm (1/4in) 552-008, Diamond Dry Hole Saw Ø 8mm (5/16in) 552-010, Diamond Dry Hole Saw Ø 10mm (3/8in) 552-012, Diamond Dry Hole Saw Ø 12mm (1/2in)