Whiddens' hand polished Bushing Full Length Sizer and Seater Sets come in most standard calibers . The Full Length Sizer Die has a shorter overall length for better shoulder bump-back, a smaller base and tighter internal tolerances. The Seater Die comes with a micrometer top for precise adjustments. These dies are designed with a floating sleeve system which helps to improve concentricity- a must for repeatable precision. No bushing is included with the set. The sizer will accept Redding or L.E. Wilson bushings.