Made with the highest quality manufacturing process and high-grade materials, our PPE Offset Printing Blankets feature quick release and a waterproof backing, ensuring a consistent and accurate transfer of ink that results in sharp, clear, and vibrant images. These printing blankets are made of long-lasting and durable rubber, making them a reliable and cost-effective choice for all your printing needs. Blankets for Heidelberg SM52. Blanket for use with Heidelberg SpeedMaster 52. Dimensions: 18-1/8" x 21-1/16". Ply: 4. Finish: Straight Cut. Model: BOS0300SM52