Assortment of Double Flanged Spring Bars are available in 3 different sizes the assortment is available as 1.30 mm, 1.50 mm, and 1.80 mm. It is as an assortment of stainless steel, double flange spring bars. The assortments contain 10 each of 10 sizes, each assortment contains 100 spring bars. Refills for assortments are available.