KO 2173 plastic gear
 

After one of the above from KO spares number 34412

I can get online but they want £3.50 postage which is abit steep for my student budget so ill try on here first!

Thanks

try and get one of the hybrid ones if you can, the centre part is metal and they are much harder to strip. They are a few more quid up front, but you may save money in the long run as the basic plastic ones can strip pretty easy with todays brushless speeds