I was cheap when I was getting started and tried this bit out first before springing for Stew's bit.
https://www.amazon.com/gp/product/B00V7AQAB0/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Fit is OK. Not turnkey but not loose. You have to spend a minute or two filing or sanding the brass blocks just a hair to get a good press in fit.