Flangeless Plug for M20 Screw Holes, Ød18mm to ØD20mm, 25.4mm Long, Silicone (Blue), Pack of 100, HBFS200-B
SGD $198.00
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.