Remember counter-clockwise = left rotation;

From the lavina 20GEB catalog page 21, the heads from L20GEB Propane FLoor Grinder have counter-clockwise = left rotation, use the blue PCDS and carbide scrapers.

And in the catalog Page 45, it shows that Blue tools for machines with left rotation(propane models and also 32” electric Elite models).

some clients are not clear about this. so they will choose wrong tools for their machines.