Earmor EXFIL Helmet Rails Adapter Attachment Kit Tactical Black. 0 of Team wendy Helmet as long as they have EXFIL rails on side. Compatible most of the headsets on the markets Specifications for Earmor EXFIL Helmet Rails Adapter Attachment Kit: Manufacturer: Earmor Color: Tactical Black Package Contents: Earmor EXFIL Helmet Rails Adapter Attachment Kit Left & Right Side Earmor M12-QD: EXFIL Helmet Rails Adapter Attachment Kit Tactical Black