Neck Sizing Bushings (Titanium Nitride) - .311Manufacture ID: 76311Heat treated steel with the addition of a Titanium Nitride surface treatment to further increase the effective surface hardnessand reduce sizing friction.Warranty: All Redding Reloading Equipment has been carefully inspected prior to shipment and is fully warranted to be free from defects in materials and workmanship for life. Any product or parts which prove to be defective willbe replaced or repaired w/out charge