11.8mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit 17mm To 17mm Main Body Size: 43mm x

Main Body Size: 43mm x 38mm / 1

Protections: Over-load

your hole should be equal to or slightly smaller than the diameter shown (less than or equal to 5mm)

Length: 550mm

MOISTURE - This feet cover can keep it out of the water

11.8mm Titanium Coated M42 High Speed Steel 8% Cobalt (HSS) Twist Drill Bit 17mm To 17mm Main Body Size: 43mm xM42 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