The adjustable jaws allow you to re-chuck bowls for finishing the bottom or do light clean-up work on the foot of the bowl.
To mount the bowl, the bowl is reversed and held by the rim, either internal or external, with 8 unique soft plastic stoppers which are mounted on the face of the jaws.
Available in 3 sizes depending on the capacity of your lathe
220mm, 285mm 385mm (size indicates maximum bowl diameter).