Filament Spool Clip

I originally downloaded the clip from "Walter" (here https://www.thingiverse.com/thing:42528) and I used it for a while, but it didn't really fit my spools. I liked the idea, so I decided to make my own that are based off his concept..

This one fits my Inland filament 1KG spools. I don't know who else uses the same spool edges, so good luck. The dimensions are basically internal dimensions of 7.5mm height, 4.75mm width and a 1.5mm hook, with a 2.1mm filament eyelet.