"The CYCLUS TOOLS repair tap for the derailleur hanger thread.
reams the damaged thread and cuts a larger thread in one operation.
Recommended tap 3.5 - 9.0 mm (Item no.: 720123)" Part Number: 720075 Barcode: 8590831330688 Product Code: CYC 720075
HELICOIL TAP FOR DROP OUT FOR ALLOY FRAMES