I bought a Milwaukee M4 cordless screwdriver (Milwaukee 2101-22) from Home Depot. Home Depot has plenty of Milwaukee screwdriver bits and I bought a set.
The bits are too short. The head of the bit is nearly inside the socket; it's hard to even reach it with my fingers to remove it, let alone drive screws with it.
Reading the label on the bits more carefully, I realized that it says "SHOCKWAVE Impact Duty". So my best guess is that this set of bits was intended for use in a Milwaukee impact driver. (I guess with an impact driver a shorter bit is better, for strength.)
The cross-sectional size of the bits seems identical (1/4" hex drive), but it seems that the M4 screwdriver needs longer bits. Yet it's nearly impossible to find the suitable bits on the Home Depot web site; almost all they have is SHOCKWAVE.
It seems strange to me that there should be two standards for screwdriver bits, differing only in length. And if there are two standards I would expect the Milwaukee web site would make it easy to search for exactly the kind of bits you need, but there's no obvious way to search for non-SHOCKWAVE bits.
Am I correct that there are two standards and I need different bits for the M4 screwdriver? Or will the SHOCKWAVE bits work somehow with the M4 screwdriver? Maybe there is some kind of common adapter I could get?
P.S. I believe I found one set of bits that would work with the M4 screwdriver. Here's the link, and a link to a SHOCKWAVE bit set for comparison. Sorry for using a Home Depot link but I cannot even find non-SHOCKWAVE bits on the Milwaukee web site at all! Not even using Google to search for part number
EDIT: Thanks for the responses. Now that you educated me, I checked to see if the SHOCKWAVE bit set I bought includes a bit tip holder, and it does. (In fact it has two bit holders, a 3" and a 6"!) I feel silly that I wasn't able to figure this out on my own, but with your help I eventually figured it out.