4935643 Impact Ready Drill Bit Set, 12-piece, Hss, Black Oxide

The Irwin 4935643 Impact Ready Drill Bit Set is a 12-piece collection of high-speed steel drill bits designed for professionals and DIY enthusiasts who need reliable performance across a range of drilling applications. Whether you're working on automotive projects, maintenance and repair operations, or using portable drills and stationary drill presses, this set delivers the durability and precision required for consistent results.

These drill bits solve the common problem of inadequate tool variety and corrosion damage by offering a comprehensive size range in a single set, all protected by a black oxide finish that resists rust and wear. The 1/4 inch hex shank with Lock-N-Load quick change compatibility makes switching bits fast and seamless, while the 135-degree split point design minimizes walking and ensures accurate hole placement.

Features and Benefits

• High-Speed Steel Construction: Durable HSS material withstands repeated use and handles drilling into wood, metal, and plastic without premature dulling.
• Black Oxide Finish: Provides exceptional corrosion resistance, protecting bits from rust in demanding work environments and extending tool life.
• 1/4 Inch Hex Shank: Compatible with impact drivers and quick-change drill/drivers, enabling fast bit changes without losing momentum on the job.
• 135-Degree Split Point: Minimizes bit walking for more precise drilling results.
• 12-Piece Set with Multiple Sizes: Includes sizes from 1/16 inch through 1/4 inch to handle diverse drilling tasks.
• Lock-N-Load Quick Change: Jobber length bits work with quick-change systems for rapid bit swaps during work.

Specifications

• Brand: Irwin (Black and Decker US Inc)
• Model: 4935643
• Piece Count: 12-piece set
• Material: High-speed steel (HSS)
• Finish: Black oxide
• Hex Shank Size: 1/4 inch
• Split Point Angle: 135 degrees
• Length: Jobber length
• Quick Change System: Lock-N-Load compatible
• Included Sizes: 1/16 in, 5/64 in, 3/32 in, 7/64 in, (2) 1/8 in, 9/64 in, 5/32 in, 3/16 in, 7/32 in, 1/4 in