M.POWER'S Double-Sided Credit Card Diamond Stone features Diamond CrossTM technology that combines an unparalleled abrasion rate, outstanding durability and ergonomics. A stainless steel core makes the double-sided 300/600-grit stone 100% rustproof. Stone comes with a clever removable grip and M.POWER'S Three-Year Guarantee.

• 300 / 600 grit

300 / 600 gritM Power