- BUILT TO LAST: Engineered with Cobalt Alloy Steel for high heat and abrasion resistance
- PRECISE DRILLING: 135° split-point tip eliminates walking
- HEAVY-DUTY USE: Tackle metal drilling, including abrasive alloy metal drilling on hardened steel
![Irwin® Cobalt High Speed Steel Drill Bits, 21/64" X 4 5/8", Split, Carded, #IR-3016021 (5/Pkg) Irwin® Cobalt High Speed Steel Drill Bits, 21/64" X 4 5/8", Split, Carded, #IR-3016021 (5/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/311477/446665/3016017__55557.1668120066.jpg?c=2)
Note: The image displayed is a representation of the product. Product dimensions, finish, head type, and thread length may differ from picture. Products are guaranteed to meet the specification to which they are manufactured. Please email us with any questions.