My experience with Truoi is that it gives a very nice surface finish but is not hard. Three sets of grips that I finished decades ago still get impressions if stored in a case with foam pressing against the surface. Most of the impressions can be smoothed out with rubbing compond I now use Minwax spray poly with drys much harder and still looks good. What a disapontment to have a nice project get impressions and surface blemish from just sitting in a gin case.