RC Tank Warfare community hobby forum

I see these 4 screws and washers plus what I assume are 2 bearing provided with my sprocket/idler set I bought for my HL PZIII
Question is what exactly are they used for ? A different application? Seems too me these sprockets and idlers will go on using the original screws that held on the plastic sprockets etc.thats correct right,

Thx gunner,
I asked because I was curious seeing as some front sprockets are 2 pieces and I had seen some pictures where the outer and inner were screwed together.
Im assuming the front sprockets are both held together with the one hex head screw.

Good to hear my thoughts confirmed,hope to finish painting them today.