Home / Turning / Chucks & Face, Drive, Back Plates / Spindle Thread Protector, 2-1/4″ 8 TPI View cart “Chuck Jaws, for Boring Mill, Willis, Set of 4” has been added to your cart. Spindle Thread Protector, 2-1/4″ 8 TPI$30.00 1 in stock Add to cart Category: Chucks & Face, Drive, Back Plates Related products Chuck, 3 Jaw, Long Taper, L1, Diameter 15″ $149.00 Add to cart Chuck, 3 Jaw, Long Taper, L00, Diameter 6″ $175.00 Add to cart Chuck, 3 Jaw, Threaded 2-3/8″ 8TPI Union 10-3/4″ Diameter $149.00 Add to cart Chuck, 3 Jaw, Camlock, D1-6, Diameter 8-1/4, PC Brand $249.00 Add to cart