Cobalt 6 (extra dark cobalt) 4mm Rod
A dense dark blue-black borosilicate glass rod. Cobalt 6 is the darkest of the six cobalt blue shades.
4mm diameter - 24 inches long.
Minimum order requirement is 1 pound.
A dense dark blue-black borosilicate glass rod. Cobalt 6 is the darkest of the six cobalt blue shades.
4mm diameter - 24 inches long.
Minimum order requirement is 1 pound.