Master Assortment of Double Flange Spring Bars this is an assortment of stainless steel double flange style spring bars. Contains a range of lengths in 3 different body diameters. Each length and thickness is contained in its own box with lift off lid. Each box is marked with dimensions and re-order number. This assortment contains a total of 690 spring bars. In diameter 1.30 mm- 6 mm to 18 mm (spring bar length) are supplied. In diameter 1.50 mm- 8 mm, 10 mm, 12 mm to 24 mm (spring bar length) are supplied. In diameter 1.80 mm- 8 mm, 10 mm, 12 mm, 14 to 24 mm (spring bar length) are supplied.