The interchangeable adapter is made of stainless steel and will allow you to go from an S interchangeable TWIST™/SPIN™ tip to a MINI interchangeable TWIST™ cable.
The larger adapter option allows you to go from an L interchangeable TWIST™/SPIN™ tip to an S interchangeable TWIST™/SPIN™ cable.
The Chiaogoo knitting product family is designed and distributed from Troy, USA.