. * Durability and excellent sound are essential for good strings, and every set of Orphee strings are guaranteed to provide a great sounding experience. * The internal wiring is hexagonal carbon steel core, clear and shiny sound and shrill sound. * The tone is rich and warm with abundant harmonics. * Extremely light weight and high quality, it has a long service life. Extra Light- (9-42) RX15, Blue Pack. For a super easily playable experience, tailored overall to the songs and a nice clean feel. Light- (10-46) RX17, Green packaging. This string set tend to be more durable than the "extra light" string set, while maintaining a durable and pleasant sound. Medium- (11-50) RX19, Grey Pack. Popular in blues and rock, they provide substantial sound while still allowing for some degree of string bending. Specifications: Brand: Orphee Model: Extra Light- (9-42) RX15/Light- (10-46) RX17/Medium- (11-50) RX19 Quantity: 1 Set/6 Pieces Material: Hexagonal Carbon Steel & Nickel Alloy Type: Electric Guitar Packing List: 1 Set Guitar Strings