Item: Swivel Eye Snap Hook Type: Bolt Snap Material: 304 Stainless Steel Standard: M6/2# Dimension: Length: 4 inch Width: 1-1/2 inch Snap Opening: 1/2 inch Package Included: 4 Pieces x Stainless Steel Eye Snap Hooks Features: 100 Percent brand new and high quality. Durable, sturdy and 360-degree rotation. Simple, easy-to-use and installs in seconds. Ideal for chains, ropes, flag pole, bird feeder,dog leash, scuba diving, shade sail, swing, hammock, hanging plants, boat,camping, hiking, rigging and other indoor & outdoor use. Suited for M5/M6 chains. Notes: Not to be used for overhead lifting, not for climbing for your safety. The color of the item may vary slightly due to photography & your computer or cell phone. Please kindly understand if there's some little gap from manual measurement. If there are any quality problems with our products, please feel free to contact us. Happy Shopping!