I liked the design of JoshShabtaiCa's model, but it didn't fit my brush (Unbranded, likely Canadian Tire Motomaster or Similar). Modifying the original model was too much work, but its a simple part so I started from scratch. Attributing as a remix for the inspiration.

Print the clip laying flat to give strength. Parts are intended to fit tightly.

I didn't make the bottom button, because I had mine