The perfect size for light and tower rescues. Fits ropes from 8mm to 1/2". Features built in safety cam for use in "jigger" or "short haul" systems. Use with CMI micro single or double pulley 3:1 or 4:1 mechanical advantage systems. Features a centered bronze bushing. Strength: 7000 lbs. The CMI Single Micro Hauler is 154 mm. tall, 53 mm wide, and 40 mm. thick and 19 g.