OSG1X500 Oil Sight Glass 1 oz., 1/2" NPTWater wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water. 

Oil Sight Glass 1 oz., 1/4" NPT Oil Sight Glass.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.

Oil Sight Glass 1 oz., 3/8" NPT, Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water. 

Oil Sight Glass Standard 16oz.,1/2"NPT. Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.

Oil Sight Glass Standard 32oz., 1/2"NPT. Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.

Oil Sight Glass Standard 3oz., 1/2" NPT.  Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.

Oil Sight Glass Standard 3oz., 1/4" NPT, Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.

Oil Sight Glass Standard 3oz.,3/8" NPT. Water wreaks havoc on lubrication systems, causing premature wear.  With the OSG, users have an immediate visual inspection of the oil and the ability to drain any accumulated water.