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Bosch Cobalt Drill Bits

Bosch Cobalt Drill Bit 1/64" x 3/4" x 1/64" CO4128 Bosch Cobalt Drill Bit 1/32" x 1-3/8" x 1/32"  CO4129 Bosch Cobalt Drill Bit 3/64" x 1/4" x 3/64"  CO4130 Bosch Cobalt Drill Bit 1/16" x 1-7/8" CO4131 Bosch Cobalt Drill Bit 5/64" x 2" x 5/64" CO4132 Bosch Cobalt Drill Bit 3/32" x 2-1/4" x 3/32" CO4133 Bosch Cobalt Drill Bit 7/64" x 2-5/8"x 7/64" CO4134 Bosch Cobalt Drill Bit 1/8" x 2-3/4" x 1/8" CO4135 Bosch Cobalt Drill Bit 9/64" x 2-7/8" x 9/64" CO4136 Bosch Cobalt Drill Bit 5/32" x 3-1/8" x 5/32" CO4137 Bosch Cobalt Drill Bit 11/64" x 3-1/4" x 11/64" CO4138 Bosch Cobalt Drill Bit 3/16" x 3-1/2" x 3/16" CO4139 Bosch Cobalt Drill Bit 13/64" x 3-5/8" x 13/64" CO4140 Bosch Cobalt Drill Bit 7/32" x 3-3/4" x 7/32" CO4141 Bosch Cobalt Drill Bit 15/64" x 3-7/8" x 15/64" CO4142 Bosch Cobalt Drill Bit 1/4" x 4" x 1/4" CO4143 Bosch Cobalt Drill Bit 17/64" x 4-1/8" x 17/64" CO4144 Bosch Cobalt Drill Bit 9/32" x 4-1/4" x 9/32" CO4145 Bosch Cobalt Drill Bit 19/64" x 4-3/8" x 19/64" CO4146 Bosch Cobalt Drill Bit 5/16" x 4-1/2" x 5/16" CO4147 Bosch Cobalt Drill Bit 21/64" x 4-5/8" x 21/64" CO4148 Bosch Cobalt Drill Bit 11/32" x 4-3/4" x 11/32" CO4149 Bosch Cobalt Drill Bit 23/64" x 4-7/8" x 23/64" CO4150 Bosch Cobalt Drill Bit 3/8" x 5" x 3/8" CO4151 Bosch Cobalt Drill Bit 25/64" x 4-7/8" x 25/64" CO4152 Bosch Cobalt Drill Bit 13/32" x 5-1/4" x 13/32" CO4153 Bosch Cobalt Drill Bit 27/64" x 5-3/8" x 27/64" CO4154 Bosch Cobalt Drill Bit 7/16" x 5-1/2" x 7/16" CO4155 Bosch Cobalt Drill Bit 29/64" x 5-5/8" x 29/64" CO4156 Bosch Cobalt Drill Bit 15/32" x 5-3/4" x 15/32" CO4157 Bosch Cobalt Drill Bit 31/64" x 5-7/8" x 31" CO4158 Bosch Cobalt Drill Bit 1/2" x 6" x 1/2" CO4159

Bosch Cobalt Drill Bits

Bosch cobalt drill bits are specially designed for drilling in hard steel. Thick web helix delivers fast material removal combined with increased durability for maximum efficiency and performance. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch.