Camshaft and eccentric ring 1 or 2 pieces of key stock

I posted something earlier but I think i asked the question wrong. I am trying me best to get my 360 together and lost the key stock to my camshaft and can't remember if it was one special piece or two pieces. Everything I find list a normal woodruff key but it doesn't stick out past the end of the camshaft to catch the slot in the fuel pump eccentric ring.