CMC Rescue - Figure 8 Descender Rappel 8FEATURES Just right for SWAT teams, climbers, cavers, and sport rappelers, the slightly more compact design of the Rappel 8 offers superb control on smaller rope. Machined from a 1 2 inch (12. 5 mm) aluminum plate and sporting CMC's superior proprietary finish for even longer wear resistance, the Rappel 8 contains almost twice the material of other small 8s, providing better heat dissipation. Because the Rappel 8 was optimized for use with NFPA