The Redi-Edge® Mini Multi Tool combines two sharpeners in one. Use the Duromite™ inserts on your straight edge knives, and the ceramitized honing rod on your serrated knives. Both will leave your knives sharp, intact, and ready to go to work, all with the use of just one handy tool. The US Navy requested a tool similar to the RETAC-201 Redi-Edge® Tactical Pro Knife Sharpener for their special operators that would sharpen straight edged blades and serrated blades…and Redi-Edge® engineers delivered again. Small size…very BIG capabilities. The REOMINI is the most useful, full-featured knife sharpener available today wherever your travels take you from rainforest to desert. Designed to sharpen both serrated and straight-edged knives. The Redi-Edge® Mini Multi-Tool Knife Sharpeners are produced from military-grade aluminum for extreme durability, long life, and light-weight. Design features include a proprietary corrosion-resistant finish, a diamond coated honing rod inserted into the body of the sharpener, a honing surface on the bottom, and a v-groove for fish hooks and needle points. The Duromite™ inserts are harder than any knife blade; and factory pre-set to the inclusive angles of 30°, 40° and 60°. The 30° inclusive angle maintains a consistent 15°double cutting edge on you filet or boning knives. The 40° inclusive angle maintains a consistent 20° double cutting edge on most knives. The 60° inclusive angle maintains a consistent 30° double cutting edge on tactical knives. Sharpens, polishes & hones.