Colour:120pcs M4-m10 Hex Socket Screw Kits Product Description This hex socket assortment contains 7 different types of nuts which are separated and stored in a case. You will quickly find the appropriate size. An insert nut provides a threaded socket for a piece of wood. similar to a wall anchor. These nuts are inserted into a screw pre-drilled hole, in this case the outer protrusions bite into the wood, preventing the nut from backing out. Excellent for furniture. Assembly and carpentry. Material: zinc alloy. Dimensions: M4x10, M5x10, M6x10, M6x15, M8x15, M8x20, M10x25. Quantity: 120 items in total. Package includes: 30 M4 x 10 hex screws. 30 M5 x 10 hex screws. 20 M6 x 10 hex screws. 15 M6 x 15 hex screws. 10 M8 x 15 hex screws. 10 M8 x 20 hex screws. 5 hex screws M10x25.