2pcs 6.5mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bits Glass Clamps High-speed steel tool is with

High-speed steel tool is with high hardness and toughness for wear resistance

Total Size: 300x13mm/11

Hex Width :22mm/0

The Signal Lamp with special symbols can be carved inside of the lampshade

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2pcs 6.5mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bits Glass Clamps High-speed steel tool is withM42 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