2 Piece Rail Adapter For Tactical Helmet Headset Holder Up To 19-21 Mm Black Description: With it, the intercom earhook can be detached from the head strap and snapped onto the holder, the mounting clip can be fixed in the grooves of the helmet, then the earmuff can be freely rotated 360 degrees Very good quality, fits perfectly to the helmet and holds the headset firmly This holder can perfectly combine the headset with any type of helmet, adjust the 19-21mm helmet guide rail The clips provide a high pressure force A great addition to your outdoor hunting tactics Specification: Material: alloy, ABS Size: 15 x 9 x 4.5 cm / 5.91 x 3.54 x 1.77 inch The package includes: 1 piece tactical rail headset holder