Primo, dude! Primo Slinkys sit between the popular Super Slinky and Regular Slinky strings while providing a fast, light tension across all six strings. Pop a set of these on and you'll understand why they are some of the world's most popular electric guitar strings. Ernie Ball Slinky's are known worldwide and used by many of the top musicians including Eric Clapton, John Mayer, Steve Vai to name a few. How about Kieth Richards? These guys know strings! These Nickel Wound Electric Guitar Strings are made from nickel plated steel wire wrapped around tin plated hex shaped steel core wire. The plain strings are made of specially tempered tin plated high carbon steel producing a well balanced tone for your guitar. Gauges .0095, .012, .016, .024, .034, .044. • MFSKU P02212 • UPC 749699103134