Counterbore Plug, (Ød2)10.9mm to (Ød1)12.1mm, Silicone (Milky White), Pack of 10, HDCS121-P
SGD $17.70
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.