304 Stainless Steel Compression Springs Assortment Kit: wire diameter x
outer diameter x overall length; Each size with 16pcs,
0.012"x0.16"x0.39"(0.3x4x10mm),0.012"x0.16"x0.59"(0.3x4x15mm), 0.011"x0.16"x0.79"(0.3x4x20mm),
0.011"x0.16"x0.99"(0.3x4x25mm), 0.011"x0.16"x1.18"(0.3x4x30mm),

0.016"x0.2"x0.39"(0.4x5x10mm), 0.016"x0.2"x0.59"(0.4x5x15mm), 0.016"x0.2"x0.79"(0.4x5x20mm), 0.016"x0.2"x0.99"(0.4x5x25mm),0.016"x0.2"x1.19"(0.4x5x30mm),

0.02"x0.24"x0.39"(0.5x6x10mm),0.02"x0.24"x0.59"(0.5x6x15mm), 0.02"x0.24"x0.79"(0.5x6x20mm), 0.02"x0.24"x0.99"(0.5x6x25mm), 0.02"x0.24"x1.19"(0.5x6x30mm),

Wide application: doors, curtain, automobiles, Watering can, piano,
scissors, electrical equipment, repair tools, umbrella, kettle, razor,
aircraft, antique tape recorder, repair toy, pliers

Material: 304 Stainless steel,not rust with strong oxidation resistance.