21st Century - Expander Mandrels (Stainless Steel) Size:0.339 A unique feature of this

A unique feature of this tool is the cross drilled hole for chip relief

Replacement crossbolt for Powder Measure

Heavy duty solvents quickly remove leading

which includes normal communication

21st Century - Expander Mandrels (Stainless Steel) Size:0.339 A unique feature of this21st Century Innovation Expander Mandrels when used with the Expander Die Body will expand the case neck for proper fit on the turning arbor. Precision CNC machined from high grade stainless steel. 21st Century Expander Mandrels and Arbors are designed for proper fit in the 21st Century die bodies. While these may work in most Sinclair and PMA die bodies we cannot guarantee proper fitment in those bodies. These are sized . 0008" (+ . 0002") below