This patented design quickly established itself as the 'state of the art' in straight line bullet seaters and beat the concentricity problems inherent in all other seating dies of this type. Tighter manufacturing tolerances were made possible due to the details of the floating seating stem system. The bullet guide to seating stem fit is so precise that the seating stem can actually be demonstrated to ?float? on a column of air. The seating stem is precision ground to exactly match bullet diameter. Alignment and accuracy are enhanced by the cartridge case and bullet being completely supported and aligned in a close fitting, precision ground sleeve before the bullet seating begins. The micrometer is calibrated in .001" increments for precise seating depth and is infinitely adjustable. The micrometer also has a feature that allows you to re-set it to your favorite seating depth. Contains: Competition Bushing Neck Sizing Die Body Die Competition Seating Die