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. Designed to fit the 100mm or 114mm chucks. N.B. The finish may be either silver or black due to changes in legislation regarding passive zinc plating.-bg