How to Use:
1. Completely remove the old sight glass, including the metal ring and rubber gasket, and make sure that all the brake fluid in the reservoir has been drained and cleaned.
2. Put the rubber sealing ring into the sight glass hole.
3. Gently press the sight glass into the hole.
4. Cover the face with a soft cloth (not included) or towel (not included) to prevent damage, and knock it in place with a hammer (not included). Check to make sure the surface is flush, even flush with the font surface.
5. Fill up the brake fluid, deflate the brakes, and then ride safely.

Specification:
Item Type: Brake Sight Glass
Material: Glass

Package List:
1 x Brake Sight Glass
1 x Rubber Ring