This Tow Worm and Ball Puller set is based on an original 18th Century American style that we recently discovered. These are longer in length and technologically different than our other offerings, measuring 3.5″ oal. The tapered threads on the ball puller are hand-filed on, as were the originals. Tow Worms can be made to fit a variety of bore sizes. Both tow worm and ball puller are available with 8×32 or 10×32 threads.
*Sold as a set