Home / Turning / Chucks & Face, Drive, Back Plates / Back Plate, Threaded, 2-3/8″ 6 TPI, Diameter 8-1/4″ View cart You cannot add that amount to the cart — we have 1 in stock and you already have 1 in your cart. Back Plate, Threaded, 2-3/8″ 6 TPI, Diameter 8-1/4″$49.00 1 in stock Add to cart Category: Chucks & Face, Drive, Back Plates Description Description 8-1/4 backplate 2-3/8 6 Spindle Thread Related products Chuck Jaws, for Boring Mill, Willis, Set of 4 $595.00 Add to cart Chuck, 3 Jaw, Threaded 2-1/4 8 TPI Bison 10″ Diameter NOS $795.00 Add to cart Chuck, 3 Jaw, Camlock, D1-5 Diameter 8″ Cadillac $249.00 Add to cart Chuck, 3 Jaw, Threaded 2-7/8″ 5 TPI Cushman 10″ Diameter $175.00 Add to cart