FHC Gunther Extra Build Mastic Cartridge - Black Plastic Cleaners If you need them

If you need them

Try our Drywall Screw Insert Bit

4-5/8" (117

1/4" (6 mm) Hex Bits SP6HB are also available to fit your magnetic screwdrivers

FHC Gunther Extra Build Mastic Cartridge - Black Plastic Cleaners If you need themGunther Extra Build is a high strength, general purpose mastic which can be built out to 2 1 2". Formulated to bond your mirror to many common substrates including, metal, drywall, tile, wood, brick, glass, marble, dura rock, Formica. Gunther Mirror Mastics have been tested for compatibility with silver, copper and mirror backing. Gunther (GPS108) Prime N Seal is recommended to enhance the adhesion of Mirror Mastic to any of the above substratesHazard