Made of high quality stainless steel 316,Strong corrosion resistance and durable in saltwater circumstance, suitable for outdoor long-term use. These spring locking pins are structurally strong and reasonably constructed, which are very convenient to use and wil not loosen during use.Great for table saw, lawn, gardening, farming, truck, boat, trailer or other locking applications.These wire lock pins are pin with a wire loop attached through the head and secured over the post at the opposite end. A wire loop at the end of the bent wire slides over the post for easy securing and removal. Similar to a clevis pin but with a wire loop attached to the end.