Letter Size Cobalt Jobber Drills | 
| 
 | 
Cobalt Jobber Drills. 
Split-Point Tips reduce walking, for accurate starts. 
Use Cobalt drills for greater heat resistance when drilling harder materials. 
Ground from solid.
 | 
| 
Quantity 
 | 
Price 
 | 
Model 
 | 
Description 
 | 
Size | 
Decimal Equivalent | 
Overall Length | 
 
  | 
$3.06  | JCO-A
  | "A" Jobber Drill Bit, Cobalt, 0146-0005  | A | 
0.234 | 
3-7/8" | 
 
  | 
$3.52  | JCO-B
  | "B" Jobber Drill Bit, Cobalt, 0146-0010  | B | 
0.238 | 
4" | 
 
  | 
$3.41  | JCO-C
  | "C" Jobber Drill Bit, Cobalt, 0146-0015  | C | 
0.242 | 
4" | 
 
  | 
$3.98  | JCO-D
  | "D" Jobber Drill Bit, Cobalt, 0146-0020  | D | 
0.246 | 
4" | 
 
  | 
$2.73  | JCO-E
  | "E" (1/4") Jobber Drill Bit, Cobalt, 0146-0025  | E | 
0.25 | 
4" | 
 
  | 
$3.52  | JCO-F
  | "F" Jobber Drill Bit, Cobalt, 0146-0030  | F | 
0.257 | 
4-1/8" | 
 
  | 
$3.52  | JCO-G
  | "G" Jobber Drill Bit, Cobalt, 0146-0035  | G | 
0.261 | 
4-1/8" | 
 
  | 
$3.98  | JCO-H
  | "H" Jobber Drill Bit, Cobalt, 0146-0040  | H | 
0.266 | 
4-1/8" | 
 
  | 
$3.71  | JCO-I
  | "I" Jobber Drill Bit, Cobalt, 0146-0045  | I | 
0.272 | 
4-1/8" | 
 
  | 
$3.98  | JCO-J
  | "J" Jobber Drill Bit, Cobalt, 0146-0050  | J | 
0.277 | 
4-1/8" | 
 
  | 
$3.98  | JCO-K
  | "K" Jobber Drill Bit, Cobalt, 0146-0055  | K | 
0.281 | 
4-1/4" | 
 
  | 
$4.45  | JCO-L
  | "L" Jobber Drill Bit, Cobalt, 0146-0060  | L | 
0.29 | 
4-1/4" | 
 
  | 
$4.77  | JCO-M
  | "M" Jobber Drill Bit, Cobalt, 0146-0065  | M | 
0.295 | 
4-3/8" | 
 
  | 
$4.75  | JCO-N
  | "N" Jobber Drill Bit, Cobalt, 0146-0070  | N | 
0.302 | 
4-3/8" | 
 
  | 
$5.29  | JCO-O
  | "O" Jobber Drill Bit, Cobalt, 0146-0075  | O | 
0.316 | 
4-1/2" | 
 
  | 
$5.62  | JCO-P
  | "P" Jobber Drill Bit, Cobalt, 0146-0080  | P | 
0.323 | 
4-5/8" | 
 
  | 
$5.74  | JCO-Q
  | "Q" Jobber Drill Bit, Cobalt, 0146-0085  | Q | 
0.332 | 
4-3/4" | 
 
  | 
$5.74  | JCO-R
  | "R" Jobber Drill Bit, Cobalt, 0146-0090  | R | 
0.339 | 
4-3/4" | 
 
  | 
$7.16  | JCO-S
  | "S" Jobber Drill Bit, Cobalt, 0146-0095  | S | 
0.348 | 
4-7/8" | 
 
  | 
$7.16  | JCO-T
  | "T" Jobber Drill Bit, Cobalt, 0146-0100  | T | 
0.358 | 
4-7/8" | 
 
  | 
$7.16  | JCO-U
  | "U" Jobber Drill Bit, Cobalt, 0146-0105  | U | 
0.368 | 
5" | 
 
  | 
$8.32  | JCO-V
  | "V" Jobber Drill Bit, Cobalt, 0146-0110  | V | 
0.377 | 
5" | 
 
  | 
$8.32  | JCO-W
  | "W" Jobber Drill Bit, Cobalt, 0146-0115  | W | 
0.386 | 
5-1/8" | 
 
  | 
$8.78  | JCO-X
  | "X" Jobber Drill Bit, Cobalt, 0146-0120  | X | 
0.397 | 
5-1/8" | 
 
  | 
$8.78  | JCO-Y
  | "Y" Jobber Drill Bit, Cobalt, 0146-0125  | Y | 
0.404 | 
5-1/4" | 
 
  | 
$9.38  | JCO-Z
  | "Z" Jobber Drill Bit, Cobalt, 0146-0130  | Z | 
0.413 | 
5-1/4" |