The 5067 wood baluster has different specifications depending on the length. The 31″ and 34″ lengths have a 6″ bottom block and a 6″ top block. The turning area will vary, depending on which length is selected. The 36″, 39″ and 42″ lengths of the 5067 style baluster will always have a 25-1/4″ turned area and a 5″ top block. The bottom block will vary, depending on which of these lengths is selected.