Specification: Product: Strut Channel Nut Size: M6 + M8 + M10 Package includes: (45 PCS) : 15 PCS M6 + 15 PCS M8 + 15 PCS M10 Strut Channel Nuts The spring nut is used to connect the fitting to the channel surface. Suitable for all C series channels and inserts. The thickened zinc coating, even after many years, our c-groove nut with spring is still bright after wiping and can be reused completely. The reinforcement design of the spring nut can fix your accessories in the channel, providing additional safety.