4x Φ 18mm Sight Glass Sight Glass with Rubber Seal Suitable for Motorcycle Storage Bags 7mm (inner) male coaxial/ barrel

7mm (inner) male coaxial/ barrel plug with positive center pin

exquisite and firm

Suitable for opening a hole on ceramic glass

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4x Φ 18mm Sight Glass Sight Glass with Rubber Seal Suitable for Motorcycle Storage Bags 7mm (inner) male coaxial/ barrelITEM NAME: 4x 18mm Sight Glass Sight Glass with Rubber Seal Suitable for Motorcycle img *{margin: 0; padding: 0;.(Be sure the reservoir is drained of all brake fluid and has been washed. 2) Place the rubber seal in the sight glass hole. 3) Gently press the sight glass piece in to the hole. 2x Sight Glass Lens. Check to make sure the face is flush and even with the font face.