BRM 16277 FLEX-HONE® for Firearms in 800 grit Silicon Carbide is the ideal hone for final polish of your 6mm ARC Rifle Chamber. The improved finish will allow the rounds to “fall” from the cylinder with ease, or eject smoothly from your chamber. Reloads will enter quickly and smoothly with reduced brass scarring. The superior surface resulting in greater accuracy, reduced wear and longer life for your firearm. Always finish with an 800 grit FLEX-HONE® for firearm tool. Proudly Made in the USA.