Check the listing for details. CONDUCTIVE GRAPHITE SHIELDING PAINT - REDUCES GUITAR HUM & BUZZ Professional. Condition: New. Listed at 11.50 USD. Professional Grade Graphite ConductiveGuitar Shielding Paint Kit w/ Vintage Grounding Lug, Brush, Screw & Vintage Cloth Push Back Ground Wire Very effective for blocking Cell phone signals, CB, TV, AM, FM signals, Radio frequency radiation and Microwaves. Tested highly effective up to 18 GHz! VERY QUICK DRY Shielding attenuation: Attenuation of 39 dB (shielding effectiveness of 99.98 %) in one layer, attenuation of 46 dB (shielding effectiveness of 99.995 %) with two layers1 OZ. Bottle Color: blackAttenuation: typically 39 dB per layerResistivity: ~10 Ohm Per Sq. FootMinimum application temperature: +1°C / 33.8°FShelf Life: 15 months, unopendedRoHS CompliantRequires grounding like any other RF shielding material.InstructionsStep 1. Shake paint well . Step 2. Paint inside cavity . let dry for 8 hours Step 3. Screw grounding lug to inside cavity Step 4. Solder Grounding wire to lug Step 5. Solder other end of grounding wire to ground source (i.e.. back cover of volume or tone pot ) It does not contain toxic solvents, plasticizers, or any other toxic ingredients