M/TCN - ALUMINIUM FILLER PLUGS M/TCNS - ALUMINIUM FILLER PLUGS WITH BREATHER HOLE M/TSN - ALUMINIUM DRAIN PLUGS -Hex head plugs, with or without hole for breather, made from Aluminium alloy 11S -Models M/TCN - M/TCNS comes marked OIL, M/TSN model comes blank -Flat asbestos-free seal, oil resistant (aluminium flat washers are optionally available)
