If you have any concerns regarding the 9mm Female to 10mm Male Adapter features, abilities, or fit please contact consumer service here or pop into our live chat feature to your lower right. This item is eligible for a return within 30-days of the shipping date. To make a return contact us via the contact us page for an RMA#. If an RMA# is not present on the outside of the box, no credit will be issued. Full Shipping Policies & Full Returns & Refund Policy
10mm male thread on one end, 9mm female thread on the other end.