SMALLRIG Extension Arm with ARRI Rosette 1870 is an adjustable rosette arm with NATO rail device. It is equipped with ARRI standard rosettes (M6, 31.8mm diameter) on opposite ends. It provides 167mm-255mm of extension for ARRI standard rosette handgrips and other gear. With a NATO rail in the middle, which allows to adjust the distance forwards and backwards just through quickly tightening and loosening the M5 thumbscrew. We also considerately provide a M3 thread to prevent the NATO rail from accidental removal. There comes with many 1/4" & 3/8" thread holes allowing for additional rigs attachment. This extension arm can be modulated at ease to relocate your handle for remote control.