10.5mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit Dark Gray Suitable for 4mm/0

Suitable for 4mm/0

and other HVAC applications

56 inches)

Total Size: 1000 x 56mm / 39

Total Size: 19 x 51mm / 0

10.5mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit Dark Gray Suitable for 4mm/0M42 steel is a super hard cobalt high speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness (Retains hardness even at high temperatures of the cutting edge.). Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant. Can greatly improves hardness, wear resistance, and reduces the coefficient of friction. Sharp