Loglife Headset and Helmet Rail Adapter Set GEN2 Peltor MSA Sordin Wendy EXFIL Tactical (BK) Headset accessories for use in the EX helmet series, in view of the unique design of the EX series helmet. It uses 4 screws, guide rail need not tear open outfit, nut is placed within the guide rail, and can freely adjust the suitable position. Very simple operation, respectively, two series of headphones, suitable for MSA headphones Quickly attaches or releases from the rail. Function: hang on MSA tactical headset with wendy or EX helmet