21st Century - Steel Neck Turn Arbor Size:20cal which includes additional parts for

which includes additional parts for keeping your optic clean at home and in the field

One piece gauge that will check overall length to indicate the need for trimming

both vertically and horizontally

This adapter fits the 21st century neck turner unit and inside fits the KM Shooting brand of neck turning arbors

New Speer Manual

21st Century - Steel Neck Turn Arbor Size:20cal which includes additional parts for21st Century Innovation Turning Arbors are machined for the perfect fit for the turning operation, thus proper neck tension. Precision CNC machined from high grade stainless steel. Can be used as an expander mandrel for setting neck tension. These are sized . 002" (+ . 0002") below bullet diameter.