Each Metolius Master Cam is a flexible, single stem unit with an ultra-narrow head width for hard aid or free climbing. Offsets are composed of two small lobes and two larger lobes to fit flared placements and pin scars.Range#00/0: 0.34-0.52 inches; 8.6-13.2mm#0/1: 0.44-0.65 inches; 11.2-16.5mm#1/2: 0.57-0.80 inches; 14.5-20.3mm#2/3: 0.67-0.97 inches; 17.0-24.6mm#3/4: 0.85-1.19 inches; 21.6-30.2mm#4/5: 1.09-1.56 inches; 27.7-39.6mm