Tri-Pak includes: 2 foam pads, 1 wool pad, and 1 backing plate. Backing plate is 7-1/4in. Diameter, 5/8in.x11in. Thread Wool Pad is 100% natural, 7-1/2in. Diameter, 1-1/4in. Pile. Yellow Foam Pad is 9-1/2in. Diameter, 1-1/2in. Thick, and is designed to give a light in.cutin. that works like magic. Black Foam Pad is 9-1/2in. Diameter, 1-1/2in. Thick, and is designed to bring your finish back to life. It's the most popular finishing foam pad, too.