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. 120mm Double ended design makes bolt snaps more versatile. 100mm Single ended swivels 360 degrees for easy and solid attachment. Perfect for sports equipment, marine hardware, leather-craft products, scuba diving, key chains, flag pole, lifting and etc. Specification: Material: 316 Stainless Steel Size Chart: Size: Double ended: 120mm/4.72inch Single ended: 100mm/3.94inch Package Includes: 1 Piece 120mm Snap Hook 1 Piece 100mm Snap Hook 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!