Portable, hand-held DMT Slydr Sharpener will address straight and curved edges in one! Easy slide release to access sharpeners stored in convenient enclosure that is 5 1/2 inch x 1 1/2 inch x 13/16 inch and includes: Straight edge sharpener 4.33 inch x 0.875 inch surface and serrated 4.44 inch with 0.25 inch to 0.0625 inch diameter taper. Both sharpeners in fine diamond (red/600 mesh, 25 micron) for a razor sharp edge. Sharpeners made in USA; other components made in China.Fine diamond for a razor sharp edgePortable housing for two sharpeners for easy storage and carryAble to address straight edges as well as curved and serratedEasy slide releaseDurable construction will provide years of performance and reliable serviceWARNING: use of this product can expose you to chemicals including nickel which is known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.