This ring extends from 78 (inner) to 80 mm (outer) and is the ideal solution for attaching an eyepiece holder with the corresponding adapter.
To fit your Crayford V-Power eyepiece holder with your Skywatcher, Orion or Celestron Newtonian telescope you only need this ring and the additional base #33360.
Summary of advantages:
Adapter manufactured by CNC in aluminum
Increases from 78/80 mm
Backfocus7 mm, and thickness of 13 mm
To attach the focuser (#59463), you only need two more adapters: the tube adapter (#33360), with 86mm horizontal and 83mm vertical holes, and the 80mm to 78mm step-down adapter. mm (#51120).