ITEM NAME:39mm String Locking Lock Nut w/ Screws Electric Guitar Parts Replacement DIY 39mm String Locking Lock Nut w/ Screws Electric Guitar Parts Replacement DIY Description: Suitable for headless electric bass replacement Perfect help to lock the string tightly Made of high quality zinc alloy, anti-corrosive and durable Suspension type, supplied with mounting screw, easy to install Material: Zinc alloy Color: Black Size Chart: Length: Approx. 39mm/ 1.53inch Package Includes: 1 Piece String Locking Nut 2 Pieces Mounting Screw Note: Due to manual measurement, there may be 1-2mm error in size..Length: Approx. 1 Piece String Locking Nut. Perfect help to lock the string tightly. Made of high quality zinc alloy, anti-corrosive and durable. Material: Zinc alloy. Suspension type, supplied with mounting screw, easy to install.