The foam attachments provide for a less aggressive and more manageable treatment. The Beartrap Foam Upgrade Pack is a great way to turn your original Beartrap Recovery Tool into a Beartrap Health. With longer rollers, over-molded foam attachments, grip rings and patented lock mechanism, the Foam Upgrade Pack will provide you with a high-quality professional grade treatment. Included are 2 Foam Rollers (includes grip rings), 2 Foam Trigger Cones, 2 Foam Trigger Balls, and 1 Foam Blocker.