These are amazing vintage blue tube beads
 
There are 3 great varieties 
 
B1 is a light teal color, 2" x 1/8" in dimension
B2 is a rich blue color, 1.5" x 1/8" in dimension
B3 is a mix of blue colors with some variation in each, 1.5" x 1/8" in dimension 
 
Sold by the 8 count bag