#20 (0.1610), Cobalt, 135 degree split point, jobbers length. Overall length 3-1/4". Pack of 12 each.

Complete drill index with storage case. M35 Cobalt steel with 135 degree spilt point. Bright Finish.

U (0.3680), Cobalt, 135 degree split point. Overall length 5". Pack of 6 each.

1/4" (0.2500") Diameter. 0.500" Working Length. 0.750 Body Length. 1/4-28 thread. Made of extra durable Cobalt Steel.

#49 (0.0730), 135 degree split point. High speed steel. 12" Aircraft Extension series

Y (0.4040), 135 degree split point. High speed steel. 12" Aircraft Extension series

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

1/8" (0.1250), Cobalt, 135 degree split point, jobbers length. Overall length 2-3/4"

1/4" (0.2500") Diameter. 1.000" Working Length. 1.300" Body Length. 1/4-28 thread. Made of extra durable Cobalt Steel.

Shank diameter: .110-.128". overall length: 2-1/4". taper: 1/4" per foot. Used for cutting, trimming and routing

Unibit Step Drill Bit, Cobalt HSS, 1/4" to 3/4", 9 Hole Sizes, 3/8" Shank IRWIN Unibit Cobalt is made of high speed steel, this step drill bit will last longer in the toughest of materials. Best suited for maintenance and repair work.

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