I did not try but I think it should work pretty much like a polish for a claws in a car body, "it camouflages filling the gaps". I have some black lacquered devices, I love the shiny and luxury, but unfortunately I know this is more fragile than eg loudspeakers solid wood cabinet and even in agglomerate side fingerprints and scratches (Avoid touching the traces are visible and if we even want a soft rag with them from the micro claws appear soon). I have 3 beautiful black 500 lcr Jamo thx for my front speakers, a suffered more than others - I did not test the product, I own (!!!) I would be later to tell my impressions on him, there are so few such products and especially found this brand in Belgium .... By cons, for the purchase in itself I would say the bomb is very very small - for me the price of this bomb "promo in" rather looks at the price it normally should cost, and expense of really unjustified shipments (13 euros !!!) is 150 grams !!! and very small. I took one second in the shopping carts, telling me that I will be a little longer with 2 and I don t have to increase fees ... error: my account again 13 euro (thus 26 euros) .... the price of 4 bombs (and I swear quer the package is small and lightweight: 300 grams including packaging) - of course, I could empty my caddy and take nothing, but it is is not so easily this kind of product, which I needed. I wrote to the dealer who is btw site, they sometimes make beautiful and offers a great choice of products, I was told very politely, but the person who answered very politely by email , I still said he could not make a gesture of goodwill because they put such product on amazon has nothing to do with a purchase on their site and it's amazon that sets fees consignments (????) ... A gesture of goodwill proposal has been made on ... a discount fee if I recommend to them on their site .... This is nice, but I had to shell 52 euro for 2 micro bombs, I'm not Croesus, I will not re-invest in a stock. If it works, I ask friends who often go to France if there is a dealer close to me in this report is the simplest