Milwaukee Shockwave, 4mm Hex, Impact-Rated Metal Drill Bit Set - 2-Piece Set

HSS-G stands for High-Speed Steel Grade, a hardened steel alloy for strength and durability. TiN (titanium nitride) coating provides a hard, low-friction surface that reduces wear, improves corrosion resistance, and can extend bit life during high-torque or tough-material applications.

The kit includes two 4mm hex-tip bits with a 1/4" shank. The hex-tip shape is designed for easy grip and fast insertion into fasteners, and the 1/4" shank fits into standard drill/driver chucks. It’s built for use with 1/4" hex-end drivers.

These TiN-coated HSS-G bits excel in tough fastening tasks, including difficult metals and hard woods. They’re designed to handle hard materials such as stainless steel and other durable substrates where wear resistance and precision starts are important.

1) Insert the 1/4" shank into a compatible drill/driver with a 1/4" hex chuck. 2) Align the 4mm hex tip with the fastener and start with moderate torque. 3) Apply steady pressure, avoid over-torquing, and allow the bit to seat cleanly. 4) Use appropriate lubrication if working with particularly tough materials to extend life.

Keep bits clean and dry after use, store in the provided case or a protected organizer, avoid excessive heat which can degrade coatings, and periodically inspect for wear or chipping. When not in use, keep them in a low-moisture environment to prevent corrosion.

Wear eye protection and gloves as needed. Ensure the bit is properly seated in the chuck, start with low speed and torque, and avoid binding or twisting that could snap the bit. Keep work area clear and use clamps to secure the workpiece.

The TiN coating provides enhanced wear resistance and smoother operation under higher torque, which can translate to longer life and better performance in demanding applications compared to uncoated HSS-G bits. You may notice less galling and easier start in tough materials.

Fastening tasks in metal or hardwood where a precise 4mm hex bit is needed, especially in tight or awkward spaces thanks to the 1/4" shank. The two-pack is handy for multi-project use or keeping a spare on hand for consistent fasteners.

If you’re considering alternatives on Fepy.com, you can compare these similarly-styled options: 1) Milwaukee Shockwave HSS-G TiN Red Hex 4mm 2pc: https://fepy.com/product/milwaukee-shockwave-hss-g-tin-red-hex-4mm-2pc 2) Milwaukee Shockwave HSS-G TiN Red Hex 4mm 2pc Set: https://fepy.com/product/milwaukee-shockwave-hss-g-tin-red-hex-4mm-2pc-set These provide the same coating and sizing in slightly different package formats for flexible purchasing.

Yes. A 2-pack typically provides better per-piece value and ensures you have an extra bit handy for repeat projects or in case one wears out, which is common with heavy-duty or frequent use.

Consider the material you’ll work with, the required reliability under high torque, and the space you’re working in. TiN coating enhances wear resistance and can extend life in tough applications, while the 4mm hex size suits fasteners of that dimension. If you frequently work in very hard materials or tight spaces, this 4mm TiN-coated option is a strong choice.