The L.E. Wilson Chamber Type Seater Die is noted for precise accuracy. Both the bullet and case are firmly held in perfect alignment as the bullet is seated in the case. Hand-die design for use with a mallet or an arbor press. Not for use on a conventional press.Notes: Die positively controls both bullet and cartridge case alignment. Bullet is pushed into the case mouth by a close-fitting bullet seating stem. This die works in an Arbor or hand press only.