Rods size: 5 -7 mm Length 51cm. Weight per rod  37grms. Approx. 12 - 15 rods per pound. NS-01 Of the four shades of cobalt blue Northstar produces, this ranks as the second lightest. NS-01 is well suited for small blown work, as well as sculpture when a medium transparent blue is desired.

Working Tips:

Cobalt Blue can take a lot of heat and can be worked in a wide range of flame settings. Though the color is extremely intense, be sure to stay out of reducing flames to prevent any dulling or graying.