Advantage: The net weight of each spring clips M4(0#) is more than 60g, HEAVIER than the same type of products on the market, more texture, more durable. Premium Performance:MIKMAYTOO chain hooks Multi-direction swivel hooks designed helps prevent tangles, suitable for M4/M5 chains. Swivel Eye Snap Hooks ,Universal Marine Scuba Diving Clips, Hardware Spring Buckles for dog leash hook, Bird Feeders/Pet Chains/Collars/small keychain clip or rope clips MATERIAL: The stainless steel clips are made of stainless steel 304, which gives the snap hooks waterproof, rustproof, and corrosion-resistant properties. EASY TO USE: Take your halyard rope crimp to small loop and pass through the small closed circle of the clips, then pull the loop and tighten with the top of clip, finally attach to flag; Great replacement clips hook on flag pole and add an additional flag even a lot of wind pressure