#27 (0.1440), Cobalt, 135 degree split point, jobbers length. Overall length 3-1/8"

#30 (0.1285") Diameter. 2.400" Working Length. 2.750" Body Length. 1/4-28 thread. Made of High Speed Steel.

#40 Diameter 6" long Aircraft Extension Drill Bit. Made of high speed steel.

E (0.2500), Cobalt, 135 degree split point. Overall length 4". Pack of 6 each.

F (0.2570), Cobalt, 135 degree split point. Overall length 4-1/8". Pack of 6 each.

5/16" (0.3125), Cobalt, 135 degree split point, jobbers length. Overall length 4-1/2"

#21 (0.1590") Diameter. 1.900" Working Length. 2.150" Body Length. 1/4-28 thread. Made of extra durable Cobalt Steel. Also used as replacement bit for the rivet removal tools (1341A & 1341S).

Package of four (4) 1/4-28 Threaded Drill Bits in size #30. Cobalt steel with black oxide finish.

5/16" (.3125) diameter. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

Shank diameter: .081-.098". overall length: 2". taper: 1/4" per foot. Used for cutting, trimming and routing

Diameter: 1/4" to 3/4" in 1/16" steps. 9 steps. 3/8" shank. These amazing drill bits will make sheet metal work a snap! No need to keep changing drill bits. One Unibit will drill many different size holes.

Package of four (4) 1/4-28 Threaded Drill Bits in size #40. Cobalt steel with black oxide finish.