Compact 43 mm metal locking nut for electric guitars fitted with a double locking system. Machined from metal with a black finish, this lock nut secures strings at the nut, allows adjustable string height at the neck, and helps maintain stable tuning and consistent tone. Key benefits Improved tuning stability: Locks strings at the nut to reduce slippage during heavy tremolo use or aggressive playing. Adjustable action at the nut: Allows fine tuning of string height for better playability at the first few frets. Durable construction: Metal body in black finish resists wear from string contact and routine adjustments. Simple installation: Comes with the screws and hexagonal wrench needed for mounting. Specifications Type: Lock nut for double locking electric guitar systems Material: Metal Color: Black Length: 43 mm Width: 15.6 mm Mounting screw hole spacing: 14 mm Package contents 1 x 43 mm locking nut 1 x Hexagonal wrench 2 x Screws Compatibility and fit Designed for electric guitars that use a double locking tremolo style nut. Verify your instrument uses a similar double locking system before installation. Check the picture dimensions carefully and confirm the 43 mm length, 15.6 mm width, and 14 mm screw spacing match your instrument mounting points. Typical use scenarios Upgrading a tremolo equipped electric guitar to improve tuning stability during dive bombs and heavy tremolo use. Replacing a worn or damaged locking nut to restore reliable string locking at the neck. Guitar or luthier installation when adjusting nut height for player preference and improving the instrument setup. Notes Confirm measurements against your guitar before to ensure correct fit.