Flangeless Plug for M8 Screw Holes, Ød6mm to ØD8mm, 25.4mm Long, Silicone (Gray), Pack of 500, HBFS80-B
SGD $405.00
Every flangeless plug is conical and hollow for a flexible fit. Furthermore, they have a knob for easy installation and removal. The threaded profile prevents excess paint from adhering to screw holes.