Geeetech Prusia i3 Pro B Spool Holder

Made to fit on the top right part of a geeetech wooden i3 to hold a spool of filament (I use hatchbox size spool) and also keep it from unwinding by putting the strand under the little thing hanging off the front. I haven't had any problems with this and it's the best way I've found to hold the spool on the printer.