The Stihl ball bearing (code 9503-003-6560) is an original spare part to be mounted on the back of Stihl brushcutters FR106 FR108 FR130T FR131T FR220 FR350 FR450 FR460TC-E FR480 FR85 FR85T and on the clutch box of Stihl brushcutters FS106 FS108 FS65 FS81 FS86 FS88 FS90 FS96 MN