Redding Neck Sizing Bushings are available in two styles, both with identical external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring full compatibility with all Redding Bushing Style Sizing Dies. These bushings are offered in precise .001 inches size increments, spanning the range from .185 inches to .368 inches and cover calibers from .17 to .338. Each bushing is clearly marked with its size I.D. for quick and easy identification. By selecting the appropriate bushing, you can apply the ideal amount of neck tension to securely hold the bullet, ensuring consistent and reliable performance without unnecessary resizing.