The Lee Precision Micrometer Neck Sizing Die Set (Product Number 92356) is designed for the 6.5 Creedmoor cartridge. It includes a Lee Collet Neck Sizing Die a Micrometer Bullet Seating Die a universal shell holder and a powder dipper. It is highly prized by precision shooters for maximizing brass life and minimizing bullet runout.Features : Lee Collet Neck Sizing Die: Sizes only the neck of the cartridge against a precision mandrel eliminating the need for case resizing lube and ensuring the body perfectly fits the firearm's chamber. Micrometer Seating Die: Features a floating bullet guide and an easy-to-read laser-engraved micrometer thimble allowing for infinite adjustability and precise repeatable seating depths to 1/1000 of an inch. Dead Length Seating: Assures a precise uniform seating depth. The sleeve can also be reversed to allow for simultaneous seating and crimping.