Lee's Reloading Collet Neck Sizer Die Undersize Mandrel 0.275" Diameter
The undersized mandrel is designed to work with the Lee collet dies. When delivered from the factory, the collet die will grip the bullet with a light press fit with cases of average hardness. Should you desire a tighter fit, you can order this undersize mandrel to replace the original. These mandrels are undersized by 0.002".
