uxcell M8 Male Thread Adjustable Furniture Chair Levelers 4Pcs Product Name: Furniture Levelers Type: Screw On; Material: Metal, Plastic; Color: Silver Tone, Black Male Thread Diameter: 8mm / 5/16"; Thread Length: 15mm / 0.59" Base Diameter: 40mm / 1.57"; Total Length: 29mm / 1.14" Weight: 51g; Package Content: 4 x Furniture Levelers