BBW is natural slate with a high garnet content

which allow for the measurement of blades with varying widths

Knives can be sharpened at exactly the same angle every time

Estimated grit for the stone is 6000-8000 JIS

Tuffite stones always have a black and grey pattern

leading edge core upgrade for work sharp ppa back-in-stock BBW is natural slate withLeading Edge Core Upgrade enhances the capabilities of WorkSharp Professional Presicion Adjust knife sharpeners with features of the Leading Edge sharpening platform. Core Upgrade offers a magnetic working table with a three point knife guide and can be extended with Leading Edge attachments. Core Upgrade utilizes a magnetic block 1. 5 x 0. 5 x 0. 25 inch with powerful N52 grade neodymium magnets. Knife Guide allows you to position a knife precisely