I purchased this unused item here because I thought I couldn't attach a G series to my 335, but I tried again and was able to attach the G series, so I am listing it for sale. The "V7-335 E Series Mounting Kit" from Vibramate in the US is a mounting kit for attaching a Bigsby B7 vibrato tailpiece to an ES-335 type archtop guitar. The V7-335 E Series Mounting Kit utilizes the original tailpiece screw holes and endpin screw, allowing you to easily install a Bigsby B7 vibrato without modifying the guitar's body. It is compatible with models where the distance from the original tailpiece position to the body end is 8.0 inches (203mm). It comes with 3 screws for the end. Thank you. Thank you for your consideration.