The Flashpoint C Stand Grip Head, aka Gobo or Knuckle Head, is used to support light modifiers, arms, scrims, cantilever flags, gobos or smaller lights, into exact position. The Head can be used to grasp a short boom, is tremendously helpful on still life sets, supporting everything from reflectors to soup spoonsin clamps. The cast aluminum head design has interlocking facing surfaces to keep a fixed position when supporting accessories on the steel arm in one of itsfour 3/4", 5/8", 3/8", and 1/8" diameter channels. The jaws open to a maximum of1-1/8" to hold rods, dowels and studs. The channel disks pivot about the center tightening handle and is grooved to friction hold firmly. When used atop light stands, it attaches via a 5/8" baby pin receiver hole with a choice of two places on the length for the tightening grip handle, taking best advantage of shorter studs on standard light stands or longer baby pin ends on Century Stands. Time tested and proven as an invaluable grip equipment, Flashpoint Grip Grip/Gobo/Knuckle Heads are an indispensible element in the image maker's inventory of trade tools.