Orifice Hooks or Tubes - choose by your shaft's diameter: All Spinolution wheels come standard with a hook orifice bar. You can purchase a tube orifice bar as an accessory. The tube orifice bar is for spinners who prefer the traditional tube, or art yarn spinners who want to spin while using a thread auto-wrap technique. In late 2017/early 2018 Spinolution began changing the flyer shafts so now there are two sizes to choose from in the 8 oz, 16 oz, 32 oz and 64 oz orifice bars - order by the diameter of your shaft. Older shafts are typically 1/4" and newer 3/8" but it's best to measure to be sure to avoid having to return/exchange. 4 oz shafts did not change.
If you need additional bobbins I always have tons, ready to ship - see their listing here:
https://thespinnerystore.com/products/spinolution-bobbins-in-stock-super-fast-cheap-shipping-all-sizes?_pos=4&_sid=792199e47&_ss=r
I ship every day Monday through Friday (and sometimes on Saturday). Your order will go out immediately!