Do you ever have days when it feels like a squirrel is banging a nut on your head? Well, Cobb has a squirrel named Sadie on his head doing just that. Both Cobb & Sadie are cast in bronze. The rivet is brass and there are two 3/4" brass screws which bolt them onto a door. They measure 6" (h)" x 4-1/4" (w) x 2-1/2" (d) with Sadie down, and 7-1/2"(h) x 4-1/4" (w) x 2-1/2" (d) with Sadie sitting up.