This 1-3/4" baluster is part of our Hampton Series.
These balusters have a fixed base block of 7-1/2" and a graduated turning area.
The 5005 baluster is similar, yet has a graduating base and fixed turning area.
Look for matching Hampton Series pin top and ball top newel posts with 35xx (3" square) and 45xx (3.5" square) part number designations.