The Matt® Ring Sizer is a solid hardwood mandrel that's been specially machined to incorporate a steel cutting blade that extends from the handle to the tapered tip to quickly and accurately enlarge the finger hole of wax ring models.

Just turn the handle like sharpening a pencil and the blade shaves the inner wall to the desired size that is clearly marked on the mandrel.

Overall Dimensions:  9.0" L x 1.5" ∅