I DO NOT THE LARGER PIC. BUT 3/4"X1/2" IS THE SMAALL RUMBER (THE PIC'S LEFT SIDE--------------1"X3/4" FORM RUBBER!!! RIGTH SIDE
They sit inside (behind) the Windshield moldings. I don't know if they are to keep you from over tightening the screws of for anti rattle but that's where they go.