This is a 6-foot Chroma/Luma 8-pin DIN to RCA connector high-performance shielded cable for the Commodore 64 and 128 (40-column mode only). This cable is compatible with any monitor that specifically uses Chroma and Luma video (as opposed to Composite--that's another entry). Composite video actually takes the raw Chroma (color) and Luma (brightness-with only a Luma signal, you'll only get black & white) and combines them into a more compact signal. In doing so, there's a bit of detail loss. With the raw Chroma/Luma going into the back of your monitor, the video is much sharper than composite. The pictures show the output onto a Commodore 1702 screen. Every cable is made individually by hand and tested after it's made and then before it goes out the door, so you know what you're getting will work.
If you have any questions or need more than one cable, don't hesitate to ask.