This stay arm is supplied as a kit which can be fitted to existing Low Profile sizes 10, 30, 40, 44, 50, 54, 60 and Medium Profile size 70 hatches (two stays required). The stay features a twist-to-lock action which requires less than half a turn to hold the lid in position. The stay also restricts the hatch’s opening to around 90 degrees which can be an advantage on some yacht installations. Fitting the stay arm requires drilling holes in the hatch lens. Full instructions and templates are provided.