The clips work fine, they are good for thinner cables like USB A or keyboard/mouse cables.
The packaging for these is terrible... I picked up the delivery box (filled with multiple Monoprice items) and I heard rattling inside. I opened it up and the box for these clips were open and they had all spilled into the delivery box. Some of them had gotten under the flaps and I imagine a few have fallen out, since I didn't take the time to count if all 100 were present.