Compact replacement parts and accessories designed for electric bass and other 4 string steel string instruments. Available in color options for visual while preserving core functions needed for tuning, string replacement, and routine setup. Key benefits Restores playability quickly by replacing worn or damaged components meant for 4 string instruments. Makes identification and setup easier through color options that help with string tracking and teaching. Compatible with instruments that use steel strings, providing a straightforward or upgrade path without requiring specialized tools. What this product does Supplies essential instrument parts and accessories that handle tuning and string mounting tasks for electric bass and similar 4 string steel string instruments. Provides material strength and consistent physical properties suitable for regular practice, rehearsal, and performance settings. Keeps setup simple for players, technicians, and hobbyists needing dependable replacement parts. Important attributes Function: replacement and accessory parts for tuning, string attachment, and basic setup of 4 string steel string instruments. Compatibility: designed for electric basses and other 4 string instruments that use steel strings. Size: intended for 4 string instrument configurations. Material: steel components for strength and durability; color finishes for easy identification. Performance: engineered to maintain stable mechanical function under normal use and quickly restore instrument readiness. Typical use scenarios On stage : swap in replacement parts between sets to keep a 4 string bass performing with minimal downtime. Practice and instruction: use color finished components to mark strings and simplify learning and setup for students. Workshop maintenance: keep a set of these parts on hand for routine servicing, string changes, and small setup tasks. Practical, straightforward, and focused on function. These parts are intended to fit common 4 string steel string instrument needs without unnecessary complexity.