I used a golf ball I try to give the customer a choice between golf ball ,stainless steel ,or que ball most like the golf ball cause its still really hard and easier to carry @ rather than the stainless or que ball
Here is one that I made over a year ago using a 1 inch steel ball. The whole thing is over 30 inches long. (I don't remember exact measurement)
It's designed to be worn like a necklace then you take it from around your neck then pull to make a handle.