Description: Made of 316 Stainless Steel, sturdy and durable, anti-rust and corrosion resistant, definitely can be used in seawater environments. Wide Range of Uses: Designed for use with rope, chain, straps, animal leashes and other home, farm and recreational applications. Can be used for a gate latch, a bucket hanger, hanging feed tubs, hay bags in the stall and many other various uses. (Optional)Double-ended design makes bolt snaps more versatile. Spring-loaded bolts provide secure closure & easy-open thumb lever. (Optional)Single-ended Base swivels 360 degrees with movable parts & features rigid eye to ensure stability and strength. Fit all the major types of hanging chairs including hammock, hanging egg, ceiling, rattan, wicker, bubble, basket, garden, cocoon, rope, cane, bamboo, knotted melati, air chairs, suspended chairs and more. Specification: Material: 316 Stainless Steel Color: Silver Size (About): (Optional) Type A(Double-ended): 12.2cm Type B(Single-ended): 90/100/110mm Package Includes: 1x Snap Hook(3 Pack) Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!