AGS Brass Case Annealer 3.0 – for multiple calibers, with digital PWM controller (adjustable from 2.5 to 10 seconds) and interchangeable inserts, and taller than previous two versions. Three sets of inserts are included – one set is for .223 and alike cases (with .402″ – 10.2 mm opening), one set is for .308 and alike cases (with .492″ – 12.5 mm opening) and one set is for cases with .532 base and alike (with .543″ – 13.8 mm opening). Use without inserts for .338 and alike (.622″ – 15.8 mm opening).