Poweka 7/8" Hydraulic Front Brake Lever Master Cylinder With 8mm Mirror Hole for 50cc 125cc 150cc 250cc GY6 Scooter Moped ATV Dirt Pit Bike Right Side With 8mm rear view mirror hole fit 7/8" handle bar With lever and brake light switch Piston bore diameter is 12.7mm Banjo Bolt is 10x1.25 mm thread pitch