Magnetic Bench, Curl and Squat Signs for a Weightlifting Power Rack

A couple of  signs to mark J-cup locations for bench,curl and squat exercises. Example printed in PLA, but  any material will work. There are two countersunk holes in the back for the magnets at this link. 

https://www.amazon.com/gp/product/B098WP6V4B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

The rack pictured is a PRX Profile power rack, but they should fit most racks.