Silicon Carbide Silversmiths' Oval Double Tapered Stone 4" x 1/2"-3/16" x 3/16"-1/16" Grit:Medium Although many customers refer to

Although many customers refer to the stones are High Rockwell

The single crank stays where you adjust it

The 4-facet geometry causes the drill to bore a straight and round hole with very close tolerances

Large: 3/4" to 1 1/4" diameter x 8" half-round cone

Silicon Carbide Silversmiths' Oval Double Tapered Stone 4" x 1/2"-3/16" x 3/16"-1/16" Grit:Medium Although many customers refer toSilicon Carbide Silversmith's Stones Silicon carbide silversmith's stones are ideal for fast material removal. Their abrasive nature makes them perfect for quickly touching up special instruments, cleaning tools and dies, and for honing to close tolerances. Dimensions 4" x 1 2" 3 16" x 3 16" 1 16" Oval, Double Tapered Available Grits: Fine 280 Grit Medium 180 Grit Coarse 120 Grit