Area 419 Zero Sizing Die Mandrel Kit Features The Area 419 Zero Sizing Die Mandrel Kit is built around a core part of the Zero sizing die design the precision ground full length mandrel that controls how much neck tension a sized case ends up with. Because these mandrels are interchangeable a reloader can select the exact tension that produces the most consistent bullet seating and release for their rifle. The four mandrels included in this kit combined with the one already shipped with a ZERO M-Series or S-Series die give the reloader neck tension options in .0005 inch increments across a .0005 to .0025 range. Each mandrel is ground from 17-4 PH stainless steel and finished with a black nitride coating a combination chosen for smooth operation and long service life under repeated sizing cycles. That durability matters to reloaders running large batches of brass where a worn or rough mandrel can introduce inconsistency shot to shot. A spare decapping pin ships with the kit as well a small but practical addition for anyone who has had a pin break mid session. For .22 caliber precision reloaders fine tuning their load for competition or long range accuracy this mandrel kit is a direct path to tighter more repeatable neck tension. Area 419 Zero Sizing Die Mandrel Kit Specifications Manufacturer: Area 419 Model: Zero Sizing Die Mandrel Kit Caliber: .224 Cal Color: Black Nitride Material: 17-4 PH Stainless Steel Dimensions: 4 x 4 x 1 Weight: 0.5 lbs Available At: GrabAGun