Everly B52's Electric Guitar Strings LT Top Heavy Btm - 9220 - 10-52 - 12 Packs Light top, heavy-bottom string gauges: .010 .013 .017 .032 .042 .052 Everly B-52s with Alloy-52 makes your guitar come alive with brighter, punchier tone.&lt;/ Everly B-52s with Alloy-52 consists of 52% nickel and 48% iron making it very durable and highly magnetic. Make your pickups work harder with Alloy-52. Package Contains 12 Packs of Cleartone Strings!