O-ring for DD/MDD

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Product Description ■ If you use an O-ring, the neck can be adjusted to your preferred length.
O-ring can also be used like this!
By passing the O-ring through the inside of the head, the head can be fixed more firmly.
[Set Contents]
O-ring (x 5)
[Product Details]
Supported Sizes : MDD2.0 (DD-f3), DD2.0 (DD-f3)