Axminster Workshop 6 Piece HSS 3 Flute Countersink Set

The high speed steel countersinks within this six piece set all conform to DIN 335/C standard. They are suitable for use in cast iron, steel, non-ferrous metals, plastics and synthetic materials hard and soft. The 90° three-flute design guarantees a smooth burr free finish. All have round shanks; the sizes included are 6.3mm, 8.3mm, 10.4mm, 12.4mm, 16.5mm and 20.5mm.