Claws, furniture feet, furniture castors or grub screws are firmly screwed in with these nuts. After assembly, they line up with the surface. The four points prevent the nut from twisting. Installation: The nuts are installed in the pre-drilled component. with a hammer. Thanks to the four claws, the nut is fixed. to work deeper into the material. This is how we invigorate; an additional and secure screw connection. Composition of four sliding blocks: M3 20 pieces M4 20 pieces M5 20 pieces M6 15 pieces M8 15 pieces Specifications: -Colour: Silver -Weight: 202 g -Material: Coated carbon steel Zinc