Soundproof Padding Foam Panels, Acoustic Foam Panel Wedge Studio Soundproofing Wall Tiles 2" X 12" X 12" Extra Thick. Absorption Panel High Density Beveled Edge (Pack of 8)

it is used so please check properly
to stick I made small hole at centre
it not big but still hole is there

for 1-2 block sharpness is less so no return allowed for those