HSP Sonic 1/10 Scale 44 Tooth Main Gear

This part has been made to fit the main 44 tooth gear of a 1/10 Scale HSP Sonic R/C Nitro On-Road Car, But it may fit other models, I'm not quite sure,
This is my first attempt at designing something so I hope its okay, I have printed it myself and it fit fine for me.
I hope its useful for someone other then myself,