Product information: The package contains 5 sight glasses and 5 sealing rings. Sight glass diameter is 18mm and fits a universal front or rear brake cylinder Comes with appropriate gasket to seal brake fluid
(Better Maintenance) When it cracks or cloudy and is hard to check the oil condition, you can replace the check window to repair the master cylinder of your motorcycle. If the window is deteriorated, the oil may bleed out, so we recommend replacing it as soon as possible. If you ask a specialist shop to repair them, you will be able to replace the master cylinders and the repair costs may be expensive, so we recommend replacing this product if you use a check window
【High Quality】Made of high quality iron + rubber material, durable and long lasting. Professionally manufactured for superior braking performance This is a good replacement for your old Master Brake Reservoir Sight Mirror Gasket
Easy to install: 1. Remove the old peek window. 2. Place the O-ring in the hole of the sight glass and push the sight glass parallel to the hole. 3. Use a hammer or clamp to knock it little. 4. Finally, make sure the brake fluid does not leak
【Applicable Scope】Fits most of old Honda, Suzuki, Kawasaki, many dirt bikes, Harley and many other brake cylinders. Please check product compatibility before purchasing, and allow 1-3mm error due to manual measurement