Milwaukee Tool 48-89-4605 1/8" SHOCKWAVE, Impact Duty RED HELIX, Titanium Drill Bit

Both. The SHOCKWAVE Impact Duty RED HELIX titanium bits are engineered for drills and impact drivers, so you can run them straight off an impact driver without worrying about snapping the shank the way a standard jobber bit would.

Two sizes: 1/8 inch (part number 48-89-4605) and 1/4 inch (part number 48-89-4613). Order by the fractional size you need for the fastener or anchor you are setting.

Milwaukee rates the titanium coating on the SHOCKWAVE bits at up to 3X the life of black oxide. If you are drilling the same hole size over and over on a punch list or an MRO cart, that is the trade: titanium coating for longer run time between replacements. The RED HELIX flute geometry also clears chips faster and the chip breaker cuts heat buildup, which is what usually kills a coated bit early.

Different jobs. The SHOCKWAVE is a twist bit for general drilling in an impact driver or drill. The Lenox 12111-10DGHS is a D/S-10Dg diamond grit bit in 5/8 inch, which is the kind of bit you reach for on hard, abrasive material rather than everyday metal and wood holes. If you need a small pilot or fastener hole, the twist bit is the one; for 5/8 inch in hard material, the diamond grit bit.

It is a standard twist geometry drill bit, just with the RED HELIX flute design, a chip breaker and a titanium coating on top of it. So it drills general purpose holes the way any twist bit does, in the 1/8 inch and 1/4 inch sizes offered.