Features: The eccentric wheel bolt nut fastening system provide quick and efficient assembly, saving you time and effort. Wheel fitting and eccentric wheel is make of alloy steel, while pre-inserted nut is make of plastic, they is pratical and strong enough for your furniture connection. Perfect solid joint set for furniture, cabinet, drawer, dresser, nylon pre-inserted nut adopting expansion principle for perfect locking. Suitable for most of furniture, cabinet, drawer, dresser. These screws ensure long terms performances and reliability for all your furniture needs. Specifications: Materials: Zinc alloy Type: 32 Plastic Rod/35 Plastic Rod/40 Plastic Rod/40 Iron Rod Plastic Expansion/40 Iron Rod Alloy Expansion Size: as shown in the picture Package Includes: 20Pcs Furniture Connector note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.