Juego de 365 tuercas M3 M4 M5 M6 M8, tuercas hexagonales, juego de tuercas hexagonales métricas, tuercas de bloqueo, auto
Lock Nuts Kit: M3 m4 m5 m6 m8 hex nuts et provide strong fixing force and maximum clamping force for better fastening and higher load capacity. Used to prevent screws from being exposed and falling off, providing better stability.