I recently bought some tape for my daughter's baseball bat, as the handle needing taping, and found it's almost identical to the stuff on my holders. The adhesive isn't hard to work with, not gummy and thick, and it's actually quite stable. The tape is about 1 inch wide and comes in different lengths, and it's made of black cloth.
I hadn't found this when I needed to fix one of my holders, so I used electrical tape. It works nice enough, but is stiff. Definitely not a route I'd go again.
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