The Russ Anderson/SMC Figure 8 (with ears) is one of the most popular full-sized descenders used by professionals throughout the rescue, fire service, police/tactical and industrial/work related markets. This is the smaller of two sizes of Figure 8 (the other is a non-NFPA model) this model is ideal for working with a single or a double wrap of rope up to 1/2'' in diameter. The ''ears'' of this design help to eliminate the potential for ropes slipping up into a girth hitch and also make it easier to ''tie off'' when on rappel. product. The oval carabiner hole doubles as a belay plate for up to 1/2'' rope. Machined from 1/2'' thick, solid aluminum, heat-treated bar and then finished with a very tough, hard-anodized finish for extra durability. APPLICATIONS: Mountain & Urban Rescue Industrial-Work related Tactical—Military & Law Enforcement Fire Departments Mountaineering & Caving Certifications Certified by Underwriter’s Laboratories to exceed the NFPA 1983 “T” - Technical Use rating on 9.5mm to 12.5mm rope. Certified by Underwriter’s Laboratories to exceed the NFPA 1983 “G” - General Use rating on 11mm to 16mm rope.