The Work Sharp Precision Adjust Upgrade Kit enhances the Precision Adjust Sharpener, elevating your knife sharpening experience. The kit includes a Tri-Brasive sharpening stone with diamond plates in 220, 320, and 400 grit, delivering perfect sharpness to your blades. Additionally, a fine Tri-Brasive sharpening stone features diamond plates in 600 and 800 grit, along with a fine-grain ceramic plate for optimal sharpening. The included sharpening rod with leather trim further refines the edge, while the integrated ceramic rod ensures ideal results for serrated knives. The kit comes with a high-quality carrying bag for convenient storage and transport.