D'Addario patented Planet Lock system fits virtually any guitar and stays locked in place until you release the side pin. Unlike ordinary strap lock systems, the Planet Lock is designed to fit securely on your guitar's existing end pins, eliminating the need to change the hardware on your guitar. Plus, you can use the same strap on different guitars. The Planet Lock is safe, secure, and easy to use. D'Addario and guitarist Joe Satriani are pleased to offer the JS Series Signature Guitar Strap Collection. The JS Strap Collection features 8 premium-quality 50mm wide tubular nylon guitar straps featuring Satriani's own artwork and artwork inspired by his famous guitars woven into comfortable, fashionable guitar straps. Each strap is designed to Joe's specifications and is adjustable in length from 35 inches to 59.5 inches long.