Feature●【FITMENT】Woodruff Key fits for Chinese GY6 50cc 80cc 139QMB Scooter Taotao Roketa Sunl Jonway.●【DIMENSION】The Length of Woodruff Key: 13mm/0.51"; The Width of Woodruff Key: 3mm/0.12".●【ADVANTAGE】 More precise fit of the key and also reduces keyway play and stress concentrations, and improves the reliability of the key.●【PACKAGE INCLUDING】4PCS X 13mm/0.51" Woodruff Key.●【AFTER SALE】If you have any questions or are not completely satisfied with your purchase, please leave us a message.Description