The L.E. Wilson Stainless Steel Chamber Type Micrometer Seater Die features a micrometer seater. Precision adjustment in .001" increments of seating depth. Both 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 is used with an Arbor press. Micrometer is graduated for .001" adjustments in seating depth FeaturesMajor seating adjustments can be made with the 3/8" - 24 TPI threads in the cap.Long lasting stainless steel materialLaser engraved markingSimple and easy to use