The bit is known as a tongue relief bit. It is a double hinge jointed bit.
The bit has large rings measuring 3.5" internal diameter.
Speedy despatch guarantee.
Please study the photos of the item for sale before buying. We aim to describe the items accurately, fairly and to the best of our ability and always include genuine photos of the products for sale in our listings. If you have any questions or concerns regarding anything prior to purchasing, please contact us for a prompt and honest response. We do not provide recommendations for use or application.
