Clymer's 300 Remington Ultra Mag Finishing Reamer is made from high-quality M-7 High-Speed Steel for professional gunsmiths, ensuring a lifetime of service when properly maintained.
The product is designed to meet SAAMI specifications with features like right-hand cutting, straight flutes, solid pilot, and integral throat for precision chambering.
Available in both Rougher and Finisher variants, the reamers come with a 7/16" round shank and 3/8" square drive, with the Finish Reamer being suitable for occasional use and the Rougher for multiple chambers to reduce wear.