Dormer G570 HSS-E AlTiCN Straight Shank 90 Countersink 20.5mm

Manufactured from a Cobalt-based HSS (M42), a premium grade high speed tool steel, heat treated to surpass the hardness of other HSS materials. The increased cobalt content helps retain hardness at elevated temperatures. This increased hot hardness makes the material especially suited for machining stainless steels and temperature resistant alloys. It also gives the material increased wear resistance needed for machining in highly abrasive cutting applications. M42 is also a very tough grade and can the... - Manufacturers part numbers: G570205|G57020.5

• Versatile product - can be used in both machine and hand held applications
• Aluminium Titanium Carbo Nitride coating - increases the service life of the tool, improved performance when used for extended periods at high speed
• Reduced plain shank - allows large diameter countersinks to be held in standard holders and chucks
• Premium HSS-E material - designed for chamfering holes in hard and abrasive materials
• 90 degrees Angle - designed to chamfer holes to accommodate standard fasteners with 90 degree heads