One of the most versatile and popular 100mm jaw sets suitable for the SK100 chucks. The C jaws expand into a 69mm recess and have a stepped shoulder for an internal grip onto a 56mm spigot diameter. These given dimensions are when the jaws form a true circle and offer the best grip. Recommended range: 50-70mm internal, 65-85mm external. Especially useful for small bowls and end grain work such as boxes and goblets. Useful accessories for these jaws include the screw chucks/faceplate drives, faceplate rings and morse taper carriers which allow the fitting of drive centres without removing the chuck from the lathe.