The kits comes with a 14mm diameter, 45cm long double 3/8"-16 female threads flex arm and two adapters included KS-038 which is hex adapter tapped with a 3/8”-16 female thread at one end and a 3/8"-16 male thread at the other for connecting to flex arm with Convi clamp and KS-038DR which is dot receiver with 3/8"-16 female thread and 16mm O.D. as a baby pin. Each adapter can be fixed with included M4 set screw, it offers the flexibility to fix or unfix the adapters from the arm whenever there is 3/8”-16 threads available. It is good for positioning of small gobos, flags, reflectors, props or flash head. Loading: 0.3kg (0.66lbs)