Product Description: Sea-Dog 1472231 Stainless Captive Bow Shackle, 5/32", Card With their rounded shape, bow shackles are designed to handle many different types of load from any direction. Constructed of forged 316 stainless, these shackles feature a captive pin closure. When open the pin completely clears the opening of the shackle and is recessed into a secured flush position. The pin remains captive and will not fall out, no risk of loss due to vibration. With other shackles, the pin is not flush until you partially unscrew it. Ideal for rigging applications where single-handed operation is required.