Drill America 5 Piece High Speed Steel Aircraft Extension Drill Bit Set (1/4-1/2" x 12" Long), POU Series
$40.51
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Description
Sizes included are 1/4", 5/16", 3/8", 7/17" and 1/2" with overall length of 12".High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge.For general purpose drilling in applications where extra length for reach is required, designed to perform in a broad range of materials in the iron and steel families.Manufactured to national aerospace standard 907
