12.1mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit M3x17mm+6mm Note: Please pay attention to

Note: Please pay attention to avoid scraping the glass on the door viewer when installing

4500RPM/min rotating speed

simply remove the clip and slip the hook through the eyelet

Step Quantity: 5

12.1mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit M3x17mm+6mm Note: Please pay attention toM42 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