IMPORTANT NOTE!: The photo shows the 3 Jaw Drill Chuck included, when in fact it is not. The product is the SDSMax shaft/shank/adapter only. You can purchase the 3 Jaw Drill Chuck at any hardware store, Lowe's, Home Depot, etc. Also note that the adapter is too short to engage the hammer feature on my Bosch demo hammer, so you will have to be content to "drill" only, without the hammer/drill feature. Otherwise, great product...did what I needed it to do...
SDS MAX to Drill Chuck inaccurate picture and description:
Hitachi 725798 SDS Max Shank Adapter to 3-Jaws Drill Chuck 1/2-InchThread for Hitachi SDS Max Rotary Hammers As stated by other buyers this is a SMS Max Shank that will accept a 3 Jaw Drill Chuck. The shank does not come with the drill chuck as stated and shown in the picture. I followed the recommendation of another review stating go to Harbor Freight for the Jacobs drill chuck. The chuck is still $5.
needs a standard 1/2-20 chuck:
The Harbor Freight $5 Jacobs 1/2-inch Drill Chuck Conversion Kit fits, has a key and a 1 year warranty.
1/2" Chuck:
I think this part may work, and Amazon sells it: Milwaukee 48-66-5185-1/2-Inch Chuck-1/2-Inch Capacit 20 Thread