The Ernie Ball RPS Electric Guitar Strings have Reinforced Plain Strings and hold tuning better than conventional plain strings.

The plain strings feature a patented winding of brass wire that is tightly wrapped around the lock twist of the ball end string to minimise slippage and breakage at the ball end. The wound strings are made from nickel plated steel wire wrapped around tin plated hex shaped steel core wire. They're made by Ernie Ball in their California factory using state of the art winding technology for consistency and reliability and are packaged in their watertight element shield packaging to resist humidity and keep your strings factory fresh.

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