this is a Spool Based mount for the creality sonic pad.
Simply unscrew the stock arms on your Sonic Pad and use the screws to attach it to the spool holder mount. You will need (2) M3 x 10 hex socket head screws to attach the lower mount holes. From there, simply twist it into place on the spool holder
I printed it with the main section horizontal (arms pointing up) with no issues. I used supports for under the arms as they are not 100% parallel with the main body.
Creality
Ender-3 S1 PRO
No
Yes
.20 mm
10%