RUBY series stones are made of aluminum oxide and are high performance stones designed for roughing work

Sigma Power Ceramic stones are universal and can be used to sharpen knives of any steel

Zhuk is to be clamped to a workbench (C-clamp is included)

flat springs

narrow glass blank for edge pro lapping films RUBY series stones are madeGlass blanks are used with lapping films for the ultra fine sharpening knives using Hapstone or Edge Pro knife sharpeners. The glass bar is attached to an empty aluminum blank. Glass blanks are available in standard and narrow sizes. Narrow size (12 mm wide) is suitable for recurved blades. Standard Glass on aluminum blank Working area 152 x 25 x 6 mm (6" x 1" x ") Suitable for regular blades Narrow Narrow glass on aluminum blank Working area 152 x 12