The Rollster cooling tray brush is a very efficient and useful tool for clearing debris from the roaster cooling tray. Debris is left behind after the beans have cooled and been removed from the cooling tray. Debris builds up clogging the cooling tray holes if the cooling tray is not cleaned regularly. The Rollster is designed for maintenance. Start using the Rollster when the holes are not clogged and use daily to prevent clogging. We have included a metal tip on the end of the handle that can be used to poke through debris that is stuck in a hole.