Amtech S6210 Metal Spring Assortment Set with Compression Springs and Extension Springs, 150pc, Plus Storage Case

150 PIECES: Contains the most popular sizes of compressed and extended springs 150-piece kit: This popular compression and extension spring assortment includes the following size selection: Compression Spring Assortment: 7.1x12.7mm, 6.4x10.3mm, 5.6x17.5mm, 9.5x15.9mm, 9.5x19.1mm, 9.1x34.9mm, 5.6x38.1mm and 9.5x19.1mm Extension Spring Assortment: 5.2x20.6mm, 5.6x25.4mm, 6.4x22.2mm, 7.9x28.6mm, 8.0x31.8mm, 8.7x46.8mm, 8.0x44.5mm, 7.1x50.8mm, 4.0x79.4mm, 4.8x44.5mm and 8.7x38.5mm Storage case: The accompanying compartmentalised storage box keeps the metal springs in order and allows you to select your desired size with ease, as we have also included a handy guide with visuals.