General description Box of 100 MasonMate Hollow Wall Anchors M4 x 46mm. The MasonMate Hollow Wall Anchors provide a permanent threaded fixing in a hollow wall, designed for secure, permanent fixing in hollow walls. Technical specifications Quantity: 100 pieces Size: M4 x 46mm Material: Zinc-plated metal Compatibility and accessories Suitable for use with M4 screws Compatible with hollow walls and drywall Installation Insert the anchor into a pre-drilled hole in the hollow wall Expand the anchor by tightening the screw to secure the fixture Usage Ideal for mounting shelves, fixtures, and other objects on hollow walls Other information Durable zinc plating enhances corrosion resistance and longevity