Flange Conical Plug (EPDM) for M20 to M24 Screw Holes, (Ød2)16mm x (Ød1)25mm, 17mm Long, EPDM (Black), Pack of 100, HBJE250-B
SGD $25.20
These masking plugs have a flange to protect the surrounding area around the hole from treatment processes. You may also use them for holes with small counterbores if the dimensions fit.