APPLICATION: Designed for lyres and most other mechanical devices with quadrilateral openings
MATERIAL:Made of solid hard steel, not easy to rust, wear-resistant and long service life
SIZE: 4.72"L x 3.14"W x 3.93"H. Inner quadrilateral (4*4mm) , Please measure the tip size of your device before purchasing to ensure that the size of your device matches the wrench quadrilateral
FEATURE: Compact and easy to carry, the L-shaped design provides a comfortable grip and leverage, making it easy to make precise adjustments for optimal sound quality and performance