Designed to work with STD lanyard radio pin. With a very low profile design, this radio arm allows for easy switch sliding operation. The perfect design and upgrade for your expensive transmitter. The length is designed to move radio 50 mm forward, adding comfort and ease of use. Also eliminates the worry of ?radio flip over? which could be extremely dangerous. Material: ALU. 7075-T6 alloy Surface Treatment: Polish and Anodize Clear Color finish