8.9mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit #10-24 * Total Length: 50mm /

* Total Length: 50mm / 2-inch

Step 1: Use an electric drill to punch

Overall Depth : 42mm/ 1

Great accessory for junction boxes or anything where inserting a cable could cause water to enter into live electrics

Cutting Diameter: 100mm / 3

8.9mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit #10-24 * Total Length: 50mm /M42 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