The WNG Adjustable Plate Perimeter Bolt allows height to be set through the perimeter bolt hole in the plate using an 8mm Allen Wrench. The cap bolt threads into the perimeter bolt below the hex for easy tightening.
available in 3 sizes:
A (38mm/1.5") For plate thicknesses ranging from 8.29mm/.326" to 30.64mm/1.206"
B (46mm/1.811") For plate thicknesses ranging from 16.29mm/.641" to 38.64mm/1.521"
C (54mm/2.128") For Plate thicknesses ranging from 24.29mm/.956" to 46.64mm/1.836"