Redding Neck Sizing Bushings are precision-engineered for optimal performance and flexibility. Comes in two styles, both feature the same external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring seamless interchangeability across all Redding Bushing Style Sizing Dies. These bushings are offered in .001 inches size increments, covering a full range from .185 inches to .368 inches and support calibers from .17 to .338. Each bushing is clearly marked with its size I.D., allowing for quick and easy selection. By choosing the right bushing, you can achieve the perfect amount of neck tension, ensuring secure bullet hold without the need for excessive resizing, resulting in consistent and reliable ammunition.