Self Adhesive Black Foam Bumpers 20 x 20 x 12mm. Self Adhesive Black Foam Bumpers 20 x 20 x 12mm. SKU: FS1 Category: Hardware Tag: Self Adhesive Black Foam Bumpers 20 x 20 x 12mm. Description Description Self Adhesive Black Foam Bumpers 20 x 20 x 12mm. 100 Pieces Per Pack. Related products Canvas Offset Brackets 25mm ZP Read more Secure-T System Wrench Read more Canvas Offset Brackets 32mm ZP Read more FrameTek Frame Space. Clear Spacers. 4.8mm Read more