Upgrade your audio equipment with our (2-Pack) Black JackNuts, the perfect replacement compatible with Roland 1/4"" Jacks (Part #17041657). Specifically designed to fit most Roland Keyboard and Guitar Amps—including the AC-60 and Micro Cube models—these 3D printed jack nuts ensure a secure and reliable connection for your instruments, enhancing your overall sound experience. Featuring pre-threaded M12x1 non-standard threading, these replacement jack nuts match the original specifications of your equipment, allowing for a seamless replacement without the need for any modifications or additional tools. Simply install them in place of your old or damaged Roland 1/4"" jack nuts, and you're ready to go. Crafted from high-strength black premium material using advanced 3D printing technology, our pre-threaded jack nuts offer exceptional durability and longevity. They are built to withstand the rigors of frequent use in various performance settings, from studio recordings to live gigs. The deep design provides a firm and secure grip with 1/4"" cables, reducing the risk of disconnection or signal loss during use. This ensures that your performances and recordings proceed smoothly without technical interruptions. In addition to Roland devices, these M12x1 threading jack nuts are also compatible with Jalco I/O jacks used in 1990's generation ZOOM processors like the 9030 and 9050. This versatility makes them an excellent addition to your audio equipment toolkit, allowing you to maintain and upgrade multiple devices with ease. Enhance your equipment's performance and reliability with these high-quality replacement Jalco I/O jack nuts. Whether you're a professional musician, audio engineer, or hobbyist, our 2-pack jack nuts provide the perfect solution for maintaining optimal connectivity in your gear. Please note: This product includes the jack nuts only; devices and cables are not included.