2aad6ef1_Coasters_com___Model_Materials__WHAT_IT_IS_USED_FOR
[ITEM] "Truck Tuner aka "The Tool" [WHO MAKES IT] Industrial machine and Tool [WHERE TO GET IT] You can get one by clicking here - scroll down a bit on the page, it's in the left column or at your local hobby model train shop [WHAT IT IS USED FOR] 
To ream out train trucks to make wheels spin freely
Model Coasters.com - Model Materials
WHAT IT IS USED FOR