Ernie Ball - Famously Slinky since 1999. Ernie Ball Music Man signature artist John Petrucci plays Ernie Ball Regular Slinky electric guitar strings. #iplayslinky | Facebook
Sterling by Music Man - One of the newest additions to Our John Petrucci Signature Collection The Sterling by Music Man JP157 7-String! Based on his sleek JP15 model. Gorgeous Quilted Maple
![Amazon.com: Ernie Ball 7-String Power Slinky Nickel Wound Electric Guitar Strings, 11-58 Gauge (P02620) : Musical Instruments Amazon.com: Ernie Ball 7-String Power Slinky Nickel Wound Electric Guitar Strings, 11-58 Gauge (P02620) : Musical Instruments](https://m.media-amazon.com/images/I/81NPltAnFKL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Ernie Ball 7-String Power Slinky Nickel Wound Electric Guitar Strings, 11-58 Gauge (P02620) : Musical Instruments
![Music Man JP7 John Petrucci Signature 7-String - Mystic Dream (Piezo, Matching Headstock, JP Inlays) | Reverb Music Man JP7 John Petrucci Signature 7-String - Mystic Dream (Piezo, Matching Headstock, JP Inlays) | Reverb](https://images.reverb.com/image/upload/s--gvxtzIqS--/a_exif,c_thumb,f_auto,fl_progressive,g_south,h_296,q_auto:eco,w_296/v1482530913/oweij2m3x30pwkfb48rx.jpg)
Music Man JP7 John Petrucci Signature 7-String - Mystic Dream (Piezo, Matching Headstock, JP Inlays) | Reverb
![Amazon.com: Sterling by Music Man 7 String Solid-Body Electric Guitar, Right, Siberian Sapphire (MAJ170-SSP) : Musical Instruments Amazon.com: Sterling by Music Man 7 String Solid-Body Electric Guitar, Right, Siberian Sapphire (MAJ170-SSP) : Musical Instruments](https://m.media-amazon.com/images/I/61RVQwc0nBL._AC_UF894,1000_QL80_.jpg)