Up until now the only way you could buy ISMI STI/SV springs is singles. Now we have 10 paks available. Save 30%. ISMI premium springs are manufactured exclusively with certified aerospace spec alloys; stainless alloy and chrome silicon. Each spring has been heat treated, stress relieved and shot peened to enhance performance and durability. These extra steps and quality materials ensure consistency and longevity many time that of standard music wire springs. All springs carry a 12 month manufacturer replacement warranty.
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