Click or scroll to zoom Tap or pinch to zoom Diamond Pen Sharpener Reversible Sharpening Stone by ConFit Australia Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $17.96 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Diamond Pen Sharpener Reversible. Profiles include 2/3rds round & 1/3rd flat with embedded fish hook sharpener reverse end is 6mm round tapering to a point.