There are two different pieces of equipment that are commonly called chocks. The more common one is designed to guide the anchor rode (rope) over the side of the boat... like this...
and here is another photo...
The other is designed to hold your anchor still and in place when stowed on board... they sometimes look like this...
and are specifice for each anchor design.
Since you are asking about a specific type of anchor... I suspect you are asking about the second type of chock. You need to get one for your specific anchor type. Or you could build one out of wood or Trex