Material: Steel zinc plated
Spring type: Compression, tension
Number of springs: 110
Max length: 6 in, 8 in
Min diameter: 11 mm, 12 mm
Min length: 1.69 in, 2 in

Spring assortments:
Assortment 1: Light requirements, with 378 small springs, including 6 each of 30 different compression springs, 6 each of 24 different extension springs, and 6 each of 9 different torsion springs.
Assortment 2: Common sizes, with 156 springs, including 4 each of 23 different compression springs, 4 each of 11 different extension springs, and 4 each of 5 different torsion springs.
Assortment 3: Medium sizes, with 110 springs, including 4 each of 7 different sizes and 6 each of 5 different sizes for compression, and 4 each of 7 different sizes and 6 each of 4 different sizes for extension.
Supplied in a plastic fan box with information on spring sizes and fan arrangement.