Hi Don. They are called "Bristol" maybe the pouch with yours had the `l' worn off.. see for example. http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=bristol+spline+wr enches&spell=1 Search for Bristo, the return is nothing. but a question did u mean `Bristol'? KD4WSI