1. Features: - Made of high - quality materials, durable and wear - resistant, suitable for long - term use. - Multi - angle rotation. The connecting arm installed on the earphone allows the earphone to rotate 360 degrees. - When the earphones are not in use, they can be folded outward or retracted onto the helmet. - Comes with two types of adapters, suitable for OPS Core ARC and M - LOK rails. 2. Specification parameters: - Name: Tactical earphone rail mount - Material: Plastic - Color: Colorful 3. Package contents: - 1 set of earphone rail mounting bracket - Only the above package contents are included, and no other products are included. 4. Note: - Light reflection and different displays may cause slight differences between the color of the items in the picture and the actual product. The allowable measurement error is +/- 1 - 3 cm.