1 1/2 Inch Diameter Clear PVC Schedule 40 Pipe [Pipe ID 1.590 inch, OD 1.900 inch] (Bluish tint), Choose Your Length (5 inches to 8 Feet) (Selected Length: 5 Feet)

I was hoping it was less blue than the picture -- its not. The picture is pretty accurate. If anything, its a slight bit darker. You can still easily see into it, but would be nice if it was clearer. Size is right, dimensions are right, quality seems to match S40. I haven't glued it in -- I used it in a drain line -- so can't comment on that. But in all other respects, it appears to be full S40 clear(blue) pipe.

Worked as advertised

Used it on my pool customers backwash line. Works perfect👍

Need a site glass into a standard PVC pipe run. Cannot beat these. Very handy product.