blister 2 sets Color: Silver pin: 7.1 mm EPT, maximum corrosion protection z8_sram_7_8 Item no.: C78EPTR71 Dimensions: 1/2 x 3/32 Shank length: 7.1 mm EPT Rust protection redefined. KMC's non-toxic and environmentally friendly EcoProTeQ Technology (EPT) provides chains with corrosion protection (first signs of rust appear after 650 hours of salt spray testing), doubling the durability of conventional rust protection and setting new standards. EcoProTeQ EPT non-toxic, environmentally friendly 100% coating: each cell element is treated separately first traces of rust only after 650 hours of salt spray testing (twice as long as conventional rust protection) smooth surface ensuring excellent driving properties minimized dirt accumulation, which reduces maintenance costs.