Sportsheet Rubber O Ring 4 Pack $12.99 Default Title Out of stock Please fill in the form below if you'd like to be notified when it becomes available. Your Email Send This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Sportsheet 4 pack Rubber O-Rings. These are perfect for fast change during dildo size change. A must have for strap on users.