Description: Big hole diameter: 2.2cm/0.9 inch; Small hole diameter: 0.8cm/0.3 inch Placement on Vehicle: Front Fitment: For Yamaha PW 50 Governor screw Start / Run / Off Switch Specification: Material: Aluminum and Plastic Color: Black + Silver Package Includes: 1 Piece Throttle Housing Start Kill Switch 1 Piece Left brake lever Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you