CUFEAL 10- Pack Heavy Duty D Shape Chain Locking M4 4MM Chain Quick Link Connector (Black)

Black painted finish - These quick links are made of iron with black paint antirust process . Easy to use - Twist clockwise the thread to open and anti-clockwise to close. The smooth threads are very convenient for installation and disassembly . Multi-purpose - M4 chain link perfect for lighting chain,key chain,camping,pets,hiking, fishing, , backpack, ropes and so on.(Not for mountaineering, rock climbing, ice climbing and high-altitude games for your safety.) 100 LB Max load - The maximum load capacity of this connector is 500 lb. Please don't exceed the max load for safety. Dimensions - With the size of 1.75" x 0.75" x 0.16", these black quick links are very convenient to use. Please confirm that the diameter of the hole of the connecting body is greater than 7mm/0.4", Weight: 100.0 grams, Manufacturer: INVEST MUCH INC.