Model Number:IGC01FS260289T Origin:Mainland China Item Name:Gear Head Part Number:4147 640 0103 4147 640 0104 Drive Shaft Tube:28mm Drive Shaft:9 Splines Collar Nut:M12 x 1.5mm Left Hand Thread Warning!:This Gear Head is 28mm with 9 Splines, please confirm your drive shaft and drive shaft size , guard before Purchase! Gear Head For Stihl Brushcutter Clearing Saw Part Number 4147 640 0103 4147 640 0104 Warning! This Gear Head is 28mm with 9 Splines, please confirm your drive tube and drive shaft size , guard before Purchase! FS260 FS311 FS360 FS410 FS460 FS490 is with three version Gear Head. Please ask us if you can not confirm your size. Size: Drive Shaft Tube:28mm Drive Shaft : 9Tooth, Collar Nut: M12 x 1.5mm Left Hand Thread Fits For Stihl Brushcutter Clearing Saw Stihl FS260 Brushcutter Stihl FS260C Brushcutter Stihl FS260C-E Stihl FS260C-E Z Stihl FS311 Stihl FS311-Z Stihl FS360C-E Stihl FS360C-E Z Stihl FS360 C-EM Clearing Saw Stihl FS360 C-EM Z Clearing Saw Stihl FS360 Clearing Saw Stihl FS410 Clearing Saw Stihl FS410C-E Stihl FS410C-E L Stihl FS410C-EM Clearing Saw Stihl FS410C-EM L Stihl FS460 Clearing Saw Stihl FS460C-EM Stihl FS460C-EM L Stihl FS460C-EM LZ Stihl FS460C-EM Z Stihl FS490C-EM Clearing Saw Stihl FS490C-EM W