CLE-LINE 1803 3/8 in. High Speed Steel Aircraft Extension Drill

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium. Display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. Manufactured to National Aerospace standard 907. 135 split point is self-centering and reduces thrust. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools, performance is similar to uncoated tools.

Drill America GLBCOX614 #14 x 6 Cobalt Aircraft Extension Drill Bit

Drill Extension 6 in Overall Metalworking Drill Bit Extensions and

For broad range of materials such as wood iron and steel. 135 split point tip prevents drill from walking sizes smaller than 1/16 in. have the 118 standard point. 12-in overall length when extra length for reach is required. High-speed steel tools are good for most general-purpose applications offering a combination of hardness and toughness for wear resistance. Black oxide surface treatment that is abrasion resistant reduces chip welding and improves chip flow.

Qualtech DWDA/CX63/8 3/8 x 6 HSS Aircraft Extension Drill Bit

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Qualtech DWDA/CX12Y Y x 12 HSS Aircraft Extension Drill Bit