Counterbore Plug, (Ød2)4.3mm to (Ød1)6.2mm, Silicone (Purple), Pack of 10, HDCS62-P
SGD $12.60
Solid and durable, every plug fits a range of hole diameters. Use them for threaded holes or holes before dowel pin installation. The counterbore ensures that the area around the hole is protected too.