This is a golf swing training aid used to see where your club face is pointing through impact. I made this to help me hit the ball straight and figured I'd share it with anyone else who wants to improve their game. It features 3 versions: short (100mm shaft), medium (150mm shaft), and long (200mm shaft). I have an A1 mini, so I have no clue how the long version performs, but I personally use the short version because I can pack it in my golf bag without worrying about it breaking. The bottom of it has slots for 4 magnets (https://www.amazon.com/dp/B0CCX29DGC?psc=1&ref=ppx_yo2ov_dt_b_product_details). The regular profile is sized at 102% so you can super glue the magnets in, but if you size it to 100%, you can just snap them in quite easily without glue.