Chain grabber slips between the links of an anchor chain and provides an excellent bridle for anchoring in heavy conditions. Two shackle holes provide attachment for bridle lines which are then made off to port and starboard deck cleats. Fits all types of chains in the following sizes; 5/16, 3/8, 7/16 and 1/2. Extremely heavy-duty. (Requires two shackles, not included).