Saber 25 Piece HSS-Co5 (Cobalt) Jobber Drill Set in ABS Plastic Case

About this item:

• Saber 25 Piece HSS-Co5 (Cobalt) Twist Drill Set in ABS Plastic Case
• Saber 25 Piece HSS-Co5 (Cobalt) Twist Drill Set 1.0-10.0mm x 0.5mm rises, 11.0-13.0 x 1.0mm rises plus 3.3, 4.2 and 6.8mm
• DIN338
• 135° Split Point (crankshaft point).
• Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
• The 135° point should be used to cut harder steel materials especially in deep hole applications.
• In these situations it will produce thicker chips minimising work hardening of the cavity.
• Faster penetration reduces abrasion and friction along the cutting edges.
• Cobalt HSS Twist drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
• Bronze Finish (gold oxide) surface treatment. The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.