Astera AX1 Double-ended Spigot to attach the AX1 Metal Holder to Manfrotto clamps and other threads (3/8” thread at one end and 1/4"-20 thread on the other) The Astera Double Ended Spigot provides for easy rigging of lights with a 5/8" diameter baby pin. Also works with the new FP1 Titan Tube.