Castaldo Gold Label is a premium, soft highly pliable rubber mold. They come pre-cut 1-7/8 x 2-7/8 inches (48 x 73 mm) with rounded corners. It has about 146 pieces that are 1/8 inch (3mm) thick, which will be enough for at least 20 molds, depending on the thickness of the mold. This rubber works great for molds with under cuts. Molds must be vulcanized at a very specific temperature.
Comes with instructions. Store away from heat. Sold in a 5 lb box. 2.27kg.