Bosch black oxide bits offer superior durability, speed and selection for most general purpose applications. Best for cutting holes into metal and work equally well in wood and plastic drilling. Use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

6 pc. 5-1/8 In. X Letter Black Oxide Drill Bits

BL4224

6 pc. 5-1/4 In. Y Letter Black Oxide Drill Bits

BL4225

6 pc. 5-1/4 In. Z Letter Black Oxide Drill Bits

BL4226

12 pc. 4 In. B Letter Black Oxide Drill Bits

BL4202

6 pc. 4-1/8 In. H Letter Black Oxide Drill Bit

BL4208

6 pc. 4-1/8 In. I Letter Black Oxide Drill Bits

BL4209

6 pc. 4-1/4 In. K Letter Black Oxide Drill Bits

BL4211

6 pc. 4-3/8 In. N Letter Black Oxide Drill Bits

BL4214

6 pc. 4-3/4 In. Q Letter Black Oxide Drill Bits

BL4217

6 pc. 4-3/4 In. R Letter Black Oxide Drill Bits

BL4218

Letter Size Black Oxide Drill Bits (Bulk)