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Stinger™ Mach-Blue™ Step Bit Set, 2-Piece, 1/8"-1/2" & 3/16"-7/8"
- Mfg.#
- 19025
- Sku#
- 3833449
- Up to 50x more holes than titanium or black oxide drill bits
- Up to 2x faster than titanium or black oxide drill bits
- Proprietary Mach-Blue™ Armor Plating is a super hard surface that retains sharper cutting edges, and reduces heat build-up and cutting friction – resulting in faster cuts and exceptionally long drill life
- Impact-rated 1/4? speed hex won’t slip in conventional 3-jaw chucks and ideal for use in quick-change impacting power tools
- Optimized 135° self-centering split point cutting geometry won’t walk or wander – even on pre-hardened or curved surfaces
* Estimated stock levels as of Fri, Jul 10, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
Spyder Stinger™ Mach-Blue™ Armor Plated high speed steel (HSS) step drill bits are high-performance metal drilling bits that provide exceptional quality and durability, drilling performance, and value. The Mach-Blue™ Armor Plating combined with the advanced M-series alloy tool steel construction and proprietary heat treatment make these bits truly revolutionary — they retain sharper cutting edges for longer, have reduced heat build-up and cutting friction, and increased durability, rigidity, and breakage resistance. These incredibly durable bits are the pro’s choice for precision drilling, extended bit life, and value. Ideal for electrical work and other applications in sheet metals, including enlarging existing holes.
Specifications
General
| Type | Step Drill Bit |
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Dimensions
| Diameter | 1/8” to 1/2” by 1/32? ; 3/16” to 7/8” by 1/16? |
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Manufacturing Details
The following information is subject to change without notice
| Prop 65 Warning |
WARNING: This product can expose you to chemicals including Wood dust, which is known to the State of California to cause cancer For more information, go to www.P65Warnings.ca.gov.
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