CMI Mini racks pack many of the same functions as the larger rescue racks. Compact to save weight and perform in tight places. All use aluminum bars. Bars are replaceable. Weight: 150 grams|Use with 7.9 to 8.5 mm ropes|Compact size|Friction adjusts easily|NFPA Version: Exceeds tests for national fire protection association standard on fire service life safety rope and system components NFPA 1983-2006 edition. *Not Certified*