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.

Letter Size Black Oxide Drill Bits (Bulk)

Select your item below for more details

Item	Diameter	Overall Length	Quantity	Shank Diameter
BL4224	X	5.125	6 (bulk)	0.397
BL4225	Y	5.25	6 (bulk)	0.404
BL4226	Z	5.25	6 (bulk)	0.412999
BL4214	N	4.375	6 (bulk)	0.301999
BL4217	Q	4.75	6 (bulk)	0.332
BL4218	R	4.75	6 (bulk)	0.339
BL4202	B	4	12 (bulk)	0.237998
BL4208	H	4.125	6 (bulk)	0.266
BL4209	I	4.125	6 (bulk)	0.272
BL4211	K	4.25	6 (bulk)	0.281

Service Hotline

Call our Service Hotline or use our contact form.

1-877-BOSCH99 (1-877-267-2499)

Mon-Fri: 7:00-19:00 CST

FAQ

Visit the Frequently Asked Questions section.
We may already have the answer for your questions.

TEXT Customer Service

Have a service related question? Text us here.

Mon-Fri: 7:00-19:00 CST