21-2858 - RUBY BENCH STONE 4-3/4 x 2 x 3/8" MEDIUM ONE SIDED IN A WOODEN BOX
Pure synthetic ruby crystals. Excellent wear resistance.
Use with or without light oil lubrication.
Specialty stone for polishing pivots and crystals.
Finished on both sides.
In a wooden box.
Item #: 21-2858
