#21 Diameter 12" long Aircraft Extension Drill Bit. Made of high speed steel.

1/4" (0.2500") Diameter. 1.900" Working Length. 2.150" Body Length. 1/4-28 thread. Made of extra durable Cobalt Steel.

Shank diameter: .165-.1875". overall length: 2-1/2". taper: 1/4" per foot. Used for cutting, trimming and routing

1/4" (0.2500) diameter, 2-3/4" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

9/64" (0.1406) diameter, 2" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

#34 (0.1110), 135 degree split point. High speed steel. 12" Aircraft Extension series

#35 (0.1100), 135 degree split point. High speed steel. 12" Aircraft Extension series

1/8" (0.1250), 135 degree split point. High speed steel. 12" Aircraft Extension series

#13 (0.1850), 135 degree split point. High speed steel. 12" Aircraft Extension series

#22 (0.1570), 135 degree split point. High speed steel. 12" Aircraft Extension series

29/64" (0.4531), 135 degree split point. High speed steel. 12" Aircraft Extension series

#20 (0.1610), 135 degree split point. High speed steel. 12" Aircraft Extension series