Flangeless Plug for M22 Screw Holes, Ød20mm to ØD22.5mm, 25.4mm Long, Silicone (Milky White), Pack of 50, HBFS225-B
SGD $117.00
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.